TY  - CONF
AU  - Umićević, Ana
AU  - Banerjee, D.
AU  - Dey, C. C.
AU  - Belošević-Čavor, Jelena
AU  - Koteski, Vasil
AU  - Ivanovski, Valentin
AU  - Toprek, Dragan
AU  - Kapidžić, Ana
AU  - Wasim Raja, Sk.
AU  - Dey Chaudhuri, S.
AU  - Blanuša, Jovan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12110
AB  - Laves phases (AB2) are alloys whose metal hydrides have been proposed to improve the energy density of Ni-MH batteries. In case of ZrV2-based battery materials, various amounts of different modifiers, such as Ti and Ni are used to improve their performance. The influence of Ni modifier in ZrV2 C15 Laves phase was investigated at atomic level by the 181TaPerturbed Angular Correlation (PAC) measurements of Zr(V0.33Ni0.67)2, Zr(V0.33Ni0.67)2.4 and Zr27V18Ni55 compounds. The dominant C15-type crystallographic structures were found in all samples by the X-ray diffraction, with the minority presence of other phases, mostly various oxides. The 181Ta-PAC preliminary results showed four different electric quadrupole interactions which give similar values for electric field gradients and non-zero asymmetry parameters in all investigated compounds.
C3  - HYPERFINE2023 : International Conference on Hyperfine Interactions and their Applications : Program & Abstracts
T1  - Perturbed angular correlation study of zirconium based C15 laves phases
SP  - 72
EP  - 72
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12110
ER  - 

@conference{
author = "Umićević, Ana and Banerjee, D. and Dey, C. C. and Belošević-Čavor, Jelena and Koteski, Vasil and Ivanovski, Valentin and Toprek, Dragan and Kapidžić, Ana and Wasim Raja, Sk. and Dey Chaudhuri, S. and Blanuša, Jovan",
year = "2023",
abstract = "Laves phases (AB2) are alloys whose metal hydrides have been proposed to improve the energy density of Ni-MH batteries. In case of ZrV2-based battery materials, various amounts of different modifiers, such as Ti and Ni are used to improve their performance. The influence of Ni modifier in ZrV2 C15 Laves phase was investigated at atomic level by the 181TaPerturbed Angular Correlation (PAC) measurements of Zr(V0.33Ni0.67)2, Zr(V0.33Ni0.67)2.4 and Zr27V18Ni55 compounds. The dominant C15-type crystallographic structures were found in all samples by the X-ray diffraction, with the minority presence of other phases, mostly various oxides. The 181Ta-PAC preliminary results showed four different electric quadrupole interactions which give similar values for electric field gradients and non-zero asymmetry parameters in all investigated compounds.",
journal = "HYPERFINE2023 : International Conference on Hyperfine Interactions and their Applications : Program & Abstracts",
title = "Perturbed angular correlation study of zirconium based C15 laves phases",
pages = "72-72",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12110"
}

Umićević, A., Banerjee, D., Dey, C. C., Belošević-Čavor, J., Koteski, V., Ivanovski, V., Toprek, D., Kapidžić, A., Wasim Raja, Sk., Dey Chaudhuri, S.,& Blanuša, J.. (2023). Perturbed angular correlation study of zirconium based C15 laves phases. in HYPERFINE2023 : International Conference on Hyperfine Interactions and their Applications : Program & Abstracts, 72-72.
https://hdl.handle.net/21.15107/rcub_vinar_12110

Umićević A, Banerjee D, Dey CC, Belošević-Čavor J, Koteski V, Ivanovski V, Toprek D, Kapidžić A, Wasim Raja S, Dey Chaudhuri S, Blanuša J. Perturbed angular correlation study of zirconium based C15 laves phases. in HYPERFINE2023 : International Conference on Hyperfine Interactions and their Applications : Program & Abstracts. 2023;:72-72.
https://hdl.handle.net/21.15107/rcub_vinar_12110 .

Umićević, Ana, Banerjee, D., Dey, C. C., Belošević-Čavor, Jelena, Koteski, Vasil, Ivanovski, Valentin, Toprek, Dragan, Kapidžić, Ana, Wasim Raja, Sk., Dey Chaudhuri, S., Blanuša, Jovan, "Perturbed angular correlation study of zirconium based C15 laves phases" in HYPERFINE2023 : International Conference on Hyperfine Interactions and their Applications : Program & Abstracts (2023):72-72,
https://hdl.handle.net/21.15107/rcub_vinar_12110 .

TY  - JOUR
AU  - Perović, Marija M.
AU  - Bošković, Marko
AU  - Kusigerski, Vladan
AU  - Jagličić, Zvonko
AU  - Blanuša, Jovan
AU  - Spasojević, Vojislav
AU  - Pizurova, Nadežda
AU  - Schneeweiss, Oldřich B.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9674
AB  - Nanoparticle materials have become a promising candidate for a new kind of storage media based on thermally induced memory effects due to the possibility to tailor their magnetic properties and behaviour. In this study, we have investigated whether the magnetic memory effects could appear at high, industry accessible temperatures including the possibility of thermal data inscription. Investigated iron oxide nanoparticles were synthesized by poliol method, which has been modified in order to allow control of particle agglomeration and consequently magnetic properties. Structure, morphology and the degree of nanoparticle agglomeration were studied by X-Ray diffraction, Transmission Electron Microscopy and Dynamic Light Scattering techniques, while magnetic properties as well as memory effects were measured on a commercial SQUID-based magnetometer. Results of the study confirmed that in super spin glass magnetite nanoparticles, magnetic memory effects can be observed up to 200 K which represents much higher temperatures in comparison to those achieved in spin glasses and other glassy materials. Procedures of writing and reading (inscribing and retrieving) of digital information in such a material were demonstrated and discussed in details.
T2  - Journal of Alloys and Compounds
T1  - Search for high temperature memory effects in magnetic nanoparticles
VL  - 855
SP  - 157523
DO  - 10.1016/j.jallcom.2020.157523
ER  - 

@article{
author = "Perović, Marija M. and Bošković, Marko and Kusigerski, Vladan and Jagličić, Zvonko and Blanuša, Jovan and Spasojević, Vojislav and Pizurova, Nadežda and Schneeweiss, Oldřich B.",
year = "2021",
abstract = "Nanoparticle materials have become a promising candidate for a new kind of storage media based on thermally induced memory effects due to the possibility to tailor their magnetic properties and behaviour. In this study, we have investigated whether the magnetic memory effects could appear at high, industry accessible temperatures including the possibility of thermal data inscription. Investigated iron oxide nanoparticles were synthesized by poliol method, which has been modified in order to allow control of particle agglomeration and consequently magnetic properties. Structure, morphology and the degree of nanoparticle agglomeration were studied by X-Ray diffraction, Transmission Electron Microscopy and Dynamic Light Scattering techniques, while magnetic properties as well as memory effects were measured on a commercial SQUID-based magnetometer. Results of the study confirmed that in super spin glass magnetite nanoparticles, magnetic memory effects can be observed up to 200 K which represents much higher temperatures in comparison to those achieved in spin glasses and other glassy materials. Procedures of writing and reading (inscribing and retrieving) of digital information in such a material were demonstrated and discussed in details.",
journal = "Journal of Alloys and Compounds",
title = "Search for high temperature memory effects in magnetic nanoparticles",
volume = "855",
pages = "157523",
doi = "10.1016/j.jallcom.2020.157523"
}

Perović, M. M., Bošković, M., Kusigerski, V., Jagličić, Z., Blanuša, J., Spasojević, V., Pizurova, N.,& Schneeweiss, O. B.. (2021). Search for high temperature memory effects in magnetic nanoparticles. in Journal of Alloys and Compounds, 855, 157523.
https://doi.org/10.1016/j.jallcom.2020.157523

Perović MM, Bošković M, Kusigerski V, Jagličić Z, Blanuša J, Spasojević V, Pizurova N, Schneeweiss OB. Search for high temperature memory effects in magnetic nanoparticles. in Journal of Alloys and Compounds. 2021;855:157523.
doi:10.1016/j.jallcom.2020.157523 .

Perović, Marija M., Bošković, Marko, Kusigerski, Vladan, Jagličić, Zvonko, Blanuša, Jovan, Spasojević, Vojislav, Pizurova, Nadežda, Schneeweiss, Oldřich B., "Search for high temperature memory effects in magnetic nanoparticles" in Journal of Alloys and Compounds, 855 (2021):157523,
https://doi.org/10.1016/j.jallcom.2020.157523 . .

TY  - JOUR
AU  - Kusigerski, Vladan
AU  - Illés, Erzsébet
AU  - Blanuša, Jovan
AU  - Gyergyek, Sašo
AU  - Bošković, Marko
AU  - Perović, Marija M.
AU  - Spasojević, Vojislav
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7983
AB  - Ferrofluids based on magnesium substituted magnetite nanoparticles MgxFe3−xO4 (x = 0.1; 0.2; 0.4) were synthesised by a chemical co-precipitation method. Their physical properties have been compared with those of the magnetite based ferrofluid obtained by the same synthesis route. Both XRD and TEM studies showed particle size decrease with the increased Mg content while DLS experiments pointed to the more prominent aggregation of Mg-containing nanoparticles. Magnetic properties investigation conducted on the powder (i.e. dried) specimens showed decrease of magnetization values with increased Mg content except for the lowest concentration of x = 0.1 where substantial saturation magnetization rise of about 40% was recorded at room temperature. Heating abilities of the studied ferrofluids under the applied AC fields (SAR values) also showed decreasing trend with the increased Mg content even for x = 0.1 sample despite its elevated magnetization value. This trend has been understood as a consequence of the changed intrinsic nanoparticle properties such as size and magnetic anisotropy, as well as contribution of a collective behaviour due to an increased nanoparticle aggregation in Mg-doped systems.
T2  - Journal of Magnetism and Magnetic Materials
T1  - Magnetic properties and heating efficacy of magnesium doped magnetite nanoparticles obtained by co-precipitation method
VL  - 475
SP  - 470
EP  - 478
DO  - 10.1016/j.jmmm.2018.11.127
ER  - 

@article{
author = "Kusigerski, Vladan and Illés, Erzsébet and Blanuša, Jovan and Gyergyek, Sašo and Bošković, Marko and Perović, Marija M. and Spasojević, Vojislav",
year = "2019",
abstract = "Ferrofluids based on magnesium substituted magnetite nanoparticles MgxFe3−xO4 (x = 0.1; 0.2; 0.4) were synthesised by a chemical co-precipitation method. Their physical properties have been compared with those of the magnetite based ferrofluid obtained by the same synthesis route. Both XRD and TEM studies showed particle size decrease with the increased Mg content while DLS experiments pointed to the more prominent aggregation of Mg-containing nanoparticles. Magnetic properties investigation conducted on the powder (i.e. dried) specimens showed decrease of magnetization values with increased Mg content except for the lowest concentration of x = 0.1 where substantial saturation magnetization rise of about 40% was recorded at room temperature. Heating abilities of the studied ferrofluids under the applied AC fields (SAR values) also showed decreasing trend with the increased Mg content even for x = 0.1 sample despite its elevated magnetization value. This trend has been understood as a consequence of the changed intrinsic nanoparticle properties such as size and magnetic anisotropy, as well as contribution of a collective behaviour due to an increased nanoparticle aggregation in Mg-doped systems.",
journal = "Journal of Magnetism and Magnetic Materials",
title = "Magnetic properties and heating efficacy of magnesium doped magnetite nanoparticles obtained by co-precipitation method",
volume = "475",
pages = "470-478",
doi = "10.1016/j.jmmm.2018.11.127"
}

Kusigerski, V., Illés, E., Blanuša, J., Gyergyek, S., Bošković, M., Perović, M. M.,& Spasojević, V.. (2019). Magnetic properties and heating efficacy of magnesium doped magnetite nanoparticles obtained by co-precipitation method. in Journal of Magnetism and Magnetic Materials, 475, 470-478.
https://doi.org/10.1016/j.jmmm.2018.11.127

Kusigerski V, Illés E, Blanuša J, Gyergyek S, Bošković M, Perović MM, Spasojević V. Magnetic properties and heating efficacy of magnesium doped magnetite nanoparticles obtained by co-precipitation method. in Journal of Magnetism and Magnetic Materials. 2019;475:470-478.
doi:10.1016/j.jmmm.2018.11.127 .

Kusigerski, Vladan, Illés, Erzsébet, Blanuša, Jovan, Gyergyek, Sašo, Bošković, Marko, Perović, Marija M., Spasojević, Vojislav, "Magnetic properties and heating efficacy of magnesium doped magnetite nanoparticles obtained by co-precipitation method" in Journal of Magnetism and Magnetic Materials, 475 (2019):470-478,
https://doi.org/10.1016/j.jmmm.2018.11.127 . .

TY  - JOUR
AU  - Vučinić-Vasić, Milica
AU  - Antić, Bratislav
AU  - Bošković, Marko
AU  - Antić, Aleksandar
AU  - Blanuša, Jovan
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8461
AB  - Nanocomposites (HAp/iron oxide), made of hydroxyapatite (HAp) and ferrimagnetic iron oxide, were synthesized by high-energy ball milling a mixture consisting of iron oxide nanoparticles and the starting materials used for the HAp synthesis: calcium hydrogen phosphate anhydrous (CaHPO4), and calcium hydroxide (Ca(OH)2). Two HAp/iron oxide samples with the magnetic phase content of 12 and 30 wt.% were prepared and their microstructure, morphology and magnetic properties were analysed by X-ray diffraction and transmission electron microscopy. Furthermore, the measurement of particle size distribution was performed by laser scattering, and temperature/field dependence on magnetization was determined. X-ray diffraction data confirmed the formation of two-phased samples (HAp and spinel iron oxide) without the presence of any other parasite phase. The shape of particles was nearly spherical in both samples, ranging from only a few to several tens of nanometres in diameter. These particles formed agglomerates with the most common value of the number-based particle size distribution of 380 and 310 nm for the sample with 12 and 30 wt.% of iron oxide, respectively. Magnetization data showed that both HAp/iron oxide composites had superparamagnetic behaviour at room temperature. © 2019 University of Novi Sad, Faculty of Technology. All rights reserved.
T2  - Processing and Application of Ceramics
T1  - Hydroxyapatite/iron oxide nanocomposite prepared by high energy ball milling
VL  - 13
IS  - 2
SP  - 210
EP  - 217
DO  - 10.2298/PAC1902210V
ER  - 

@article{
author = "Vučinić-Vasić, Milica and Antić, Bratislav and Bošković, Marko and Antić, Aleksandar and Blanuša, Jovan",
year = "2019",
abstract = "Nanocomposites (HAp/iron oxide), made of hydroxyapatite (HAp) and ferrimagnetic iron oxide, were synthesized by high-energy ball milling a mixture consisting of iron oxide nanoparticles and the starting materials used for the HAp synthesis: calcium hydrogen phosphate anhydrous (CaHPO4), and calcium hydroxide (Ca(OH)2). Two HAp/iron oxide samples with the magnetic phase content of 12 and 30 wt.% were prepared and their microstructure, morphology and magnetic properties were analysed by X-ray diffraction and transmission electron microscopy. Furthermore, the measurement of particle size distribution was performed by laser scattering, and temperature/field dependence on magnetization was determined. X-ray diffraction data confirmed the formation of two-phased samples (HAp and spinel iron oxide) without the presence of any other parasite phase. The shape of particles was nearly spherical in both samples, ranging from only a few to several tens of nanometres in diameter. These particles formed agglomerates with the most common value of the number-based particle size distribution of 380 and 310 nm for the sample with 12 and 30 wt.% of iron oxide, respectively. Magnetization data showed that both HAp/iron oxide composites had superparamagnetic behaviour at room temperature. © 2019 University of Novi Sad, Faculty of Technology. All rights reserved.",
journal = "Processing and Application of Ceramics",
title = "Hydroxyapatite/iron oxide nanocomposite prepared by high energy ball milling",
volume = "13",
number = "2",
pages = "210-217",
doi = "10.2298/PAC1902210V"
}

Vučinić-Vasić, M., Antić, B., Bošković, M., Antić, A.,& Blanuša, J.. (2019). Hydroxyapatite/iron oxide nanocomposite prepared by high energy ball milling. in Processing and Application of Ceramics, 13(2), 210-217.
https://doi.org/10.2298/PAC1902210V

Vučinić-Vasić M, Antić B, Bošković M, Antić A, Blanuša J. Hydroxyapatite/iron oxide nanocomposite prepared by high energy ball milling. in Processing and Application of Ceramics. 2019;13(2):210-217.
doi:10.2298/PAC1902210V .

Vučinić-Vasić, Milica, Antić, Bratislav, Bošković, Marko, Antić, Aleksandar, Blanuša, Jovan, "Hydroxyapatite/iron oxide nanocomposite prepared by high energy ball milling" in Processing and Application of Ceramics, 13, no. 2 (2019):210-217,
https://doi.org/10.2298/PAC1902210V . .

TY  - JOUR
AU  - Kremenović, Aleksandar S.
AU  - Antić, Bratislav
AU  - Vulić, Predrag J.
AU  - Blanuša, Jovan
AU  - Tomić, Aleksandra
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1469
AB  - Magnetic structure of ZnFe2O4 normal spinel is re- examined. Antiferromagnetic structure non-collinear model is established within C(a)2 space group having four different crystallographic/magnetic sites for 32 Fe3+ spins within magnetic unit cell.
T2  - Journal of Magnetism and Magnetic Materials
T1  - ZnFe2O4 antiferromagnetic structure redetermination
VL  - 426
SP  - 264
EP  - 266
DO  - 10.1016/j.jmmm.2016.11.071
ER  - 

@article{
author = "Kremenović, Aleksandar S. and Antić, Bratislav and Vulić, Predrag J. and Blanuša, Jovan and Tomić, Aleksandra",
year = "2017",
abstract = "Magnetic structure of ZnFe2O4 normal spinel is re- examined. Antiferromagnetic structure non-collinear model is established within C(a)2 space group having four different crystallographic/magnetic sites for 32 Fe3+ spins within magnetic unit cell.",
journal = "Journal of Magnetism and Magnetic Materials",
title = "ZnFe2O4 antiferromagnetic structure redetermination",
volume = "426",
pages = "264-266",
doi = "10.1016/j.jmmm.2016.11.071"
}

Kremenović, A. S., Antić, B., Vulić, P. J., Blanuša, J.,& Tomić, A.. (2017). ZnFe2O4 antiferromagnetic structure redetermination. in Journal of Magnetism and Magnetic Materials, 426, 264-266.
https://doi.org/10.1016/j.jmmm.2016.11.071

Kremenović AS, Antić B, Vulić PJ, Blanuša J, Tomić A. ZnFe2O4 antiferromagnetic structure redetermination. in Journal of Magnetism and Magnetic Materials. 2017;426:264-266.
doi:10.1016/j.jmmm.2016.11.071 .

Kremenović, Aleksandar S., Antić, Bratislav, Vulić, Predrag J., Blanuša, Jovan, Tomić, Aleksandra, "ZnFe2O4 antiferromagnetic structure redetermination" in Journal of Magnetism and Magnetic Materials, 426 (2017):264-266,
https://doi.org/10.1016/j.jmmm.2016.11.071 . .

TY  - CONF
AU  - Nikolić, Violeta
AU  - Mraković, Ana
AU  - Perović, Marija
AU  - Bošković, Marko
AU  - Spasojević, Vojislav
AU  - Kusigerski, Vladan
AU  - Blanuša, Jovan
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13209
AB  - In this paper, spherical Fe3O4@OA nanoparticles were prepared via solvothermal method, in which iron sulphate, sodium hydroxide and oleic acid were used as precursors. The main idea of this research was to develop the method for preparation of nanoparticles with magnetic properties suitable for application in magnetic hyperthermia. We have tried to tailor size, shape and the degree of interparticle interactions by varying experimental conditions during the synthesis route. Obtained samples were structurally and magnetically characterized by means of different experimental probes such as: X-ray diffraction, SQUID magnetometry, FTIR and Mossbauer spectroscopy. Structural characterization asserts that the obtained phase is magnetite, Fe3O4, while FTIR spectra support the presence of oleic acid coating on the particle surface. Detailed magnetic characterization done by SQUID measurements and Mossbauer spectroscopy confirmed the presence of the strong and weak interactions in the nanoparticles system, depending on the synthesis conditions.
PB  - University of Novi Sad : Faculty of Technology
C3  - 11th Conference for Young Scientists in Ceramics (SM-2015, and ESR Workshop, COST MP1208) : programme and the book of abstracts
T1  - Solvothermal synthesis of magnetite nanoparticles suitable for application in magnetic hyperthermia
SP  - 35
EP  - 36
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13209
ER  - 

@conference{
author = "Nikolić, Violeta and Mraković, Ana and Perović, Marija and Bošković, Marko and Spasojević, Vojislav and Kusigerski, Vladan and Blanuša, Jovan",
year = "2015",
abstract = "In this paper, spherical Fe3O4@OA nanoparticles were prepared via solvothermal method, in which iron sulphate, sodium hydroxide and oleic acid were used as precursors. The main idea of this research was to develop the method for preparation of nanoparticles with magnetic properties suitable for application in magnetic hyperthermia. We have tried to tailor size, shape and the degree of interparticle interactions by varying experimental conditions during the synthesis route. Obtained samples were structurally and magnetically characterized by means of different experimental probes such as: X-ray diffraction, SQUID magnetometry, FTIR and Mossbauer spectroscopy. Structural characterization asserts that the obtained phase is magnetite, Fe3O4, while FTIR spectra support the presence of oleic acid coating on the particle surface. Detailed magnetic characterization done by SQUID measurements and Mossbauer spectroscopy confirmed the presence of the strong and weak interactions in the nanoparticles system, depending on the synthesis conditions.",
publisher = "University of Novi Sad : Faculty of Technology",
journal = "11th Conference for Young Scientists in Ceramics (SM-2015, and ESR Workshop, COST MP1208) : programme and the book of abstracts",
title = "Solvothermal synthesis of magnetite nanoparticles suitable for application in magnetic hyperthermia",
pages = "35-36",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13209"
}

Nikolić, V., Mraković, A., Perović, M., Bošković, M., Spasojević, V., Kusigerski, V.,& Blanuša, J.. (2015). Solvothermal synthesis of magnetite nanoparticles suitable for application in magnetic hyperthermia. in 11th Conference for Young Scientists in Ceramics (SM-2015, and ESR Workshop, COST MP1208) : programme and the book of abstracts
University of Novi Sad : Faculty of Technology., 35-36.
https://hdl.handle.net/21.15107/rcub_vinar_13209

Nikolić V, Mraković A, Perović M, Bošković M, Spasojević V, Kusigerski V, Blanuša J. Solvothermal synthesis of magnetite nanoparticles suitable for application in magnetic hyperthermia. in 11th Conference for Young Scientists in Ceramics (SM-2015, and ESR Workshop, COST MP1208) : programme and the book of abstracts. 2015;:35-36.
https://hdl.handle.net/21.15107/rcub_vinar_13209 .

Nikolić, Violeta, Mraković, Ana, Perović, Marija, Bošković, Marko, Spasojević, Vojislav, Kusigerski, Vladan, Blanuša, Jovan, "Solvothermal synthesis of magnetite nanoparticles suitable for application in magnetic hyperthermia" in 11th Conference for Young Scientists in Ceramics (SM-2015, and ESR Workshop, COST MP1208) : programme and the book of abstracts (2015):35-36,
https://hdl.handle.net/21.15107/rcub_vinar_13209 .

TY  - JOUR
AU  - Perović, Marija M.
AU  - Kusigerski, Vladan
AU  - Mraković, Ana Đ.
AU  - Spasojević, Vojislav
AU  - Blanuša, Jovan
AU  - Nikolić, Violeta N.
AU  - Schneeweiss, Oldřich B.
AU  - David, B.
AU  - Pizurova, Nadežda
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/429
AB  - Nanorod ferrous oxalate dihydrate (FeC2O4 x 2H(2)O) which had been synthesized by the microemulsion method, was used as a precursor in the thermal decomposition process performed in air atmosphere. The formation of nanocrystalline hematite as the final product was preceded by the appearence of an intermediate product. Comprehensive study comprising several complementary techniques (x-ray diffraction, transmission electron microscopy, selected area electron diffraction, thermogravimetric/differential thermal analyses and SQUID magnetometry) confirmed that the intermediate product corresponds to the poorly crystalline Fe2O3. Due to the specific nanorod shape and poorly crystalline structure, the investigated Fe2O3 showed high coercive field value of similar to 0.5 T at 5 K. Special attention in this study was devoted to the peculiar magnetic properties of poorly crystalline Fe2O3, which were thoroughly investigated by employing sophisticated experimental procedures such as relaxation of thermoremanent magnetization for different cooling fields, zero field and field cooled memory effects as well as aging experiments for different waiting times. At low temperatures and weak applied magnetic fields, the investigated system behaves similarly to spin glasses, manifesting slow, collective relaxation dynamics of magnetic moments through memory, rejuvenation and aging effects.
T2  - Nanotechnology
T1  - The glassy behaviour of poorly crystalline Fe2O3 nanorods obtained by thermal decomposition of ferrous oxalate
VL  - 26
IS  - 11
DO  - 10.1088/0957-4484/26/11/115705
ER  - 

@article{
author = "Perović, Marija M. and Kusigerski, Vladan and Mraković, Ana Đ. and Spasojević, Vojislav and Blanuša, Jovan and Nikolić, Violeta N. and Schneeweiss, Oldřich B. and David, B. and Pizurova, Nadežda",
year = "2015",
abstract = "Nanorod ferrous oxalate dihydrate (FeC2O4 x 2H(2)O) which had been synthesized by the microemulsion method, was used as a precursor in the thermal decomposition process performed in air atmosphere. The formation of nanocrystalline hematite as the final product was preceded by the appearence of an intermediate product. Comprehensive study comprising several complementary techniques (x-ray diffraction, transmission electron microscopy, selected area electron diffraction, thermogravimetric/differential thermal analyses and SQUID magnetometry) confirmed that the intermediate product corresponds to the poorly crystalline Fe2O3. Due to the specific nanorod shape and poorly crystalline structure, the investigated Fe2O3 showed high coercive field value of similar to 0.5 T at 5 K. Special attention in this study was devoted to the peculiar magnetic properties of poorly crystalline Fe2O3, which were thoroughly investigated by employing sophisticated experimental procedures such as relaxation of thermoremanent magnetization for different cooling fields, zero field and field cooled memory effects as well as aging experiments for different waiting times. At low temperatures and weak applied magnetic fields, the investigated system behaves similarly to spin glasses, manifesting slow, collective relaxation dynamics of magnetic moments through memory, rejuvenation and aging effects.",
journal = "Nanotechnology",
title = "The glassy behaviour of poorly crystalline Fe2O3 nanorods obtained by thermal decomposition of ferrous oxalate",
volume = "26",
number = "11",
doi = "10.1088/0957-4484/26/11/115705"
}

Perović, M. M., Kusigerski, V., Mraković, A. Đ., Spasojević, V., Blanuša, J., Nikolić, V. N., Schneeweiss, O. B., David, B.,& Pizurova, N.. (2015). The glassy behaviour of poorly crystalline Fe2O3 nanorods obtained by thermal decomposition of ferrous oxalate. in Nanotechnology, 26(11).
https://doi.org/10.1088/0957-4484/26/11/115705

Perović MM, Kusigerski V, Mraković AĐ, Spasojević V, Blanuša J, Nikolić VN, Schneeweiss OB, David B, Pizurova N. The glassy behaviour of poorly crystalline Fe2O3 nanorods obtained by thermal decomposition of ferrous oxalate. in Nanotechnology. 2015;26(11).
doi:10.1088/0957-4484/26/11/115705 .

Perović, Marija M., Kusigerski, Vladan, Mraković, Ana Đ., Spasojević, Vojislav, Blanuša, Jovan, Nikolić, Violeta N., Schneeweiss, Oldřich B., David, B., Pizurova, Nadežda, "The glassy behaviour of poorly crystalline Fe2O3 nanorods obtained by thermal decomposition of ferrous oxalate" in Nanotechnology, 26, no. 11 (2015),
https://doi.org/10.1088/0957-4484/26/11/115705 . .

TY  - JOUR
AU  - Nikolić, Violeta N.
AU  - Perović, Marija M.
AU  - Kusigerski, Vladan
AU  - Bošković, Marko
AU  - Mraković, Ana Đ.
AU  - Blanuša, Jovan
AU  - Spasojević, Vojislav
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/561
AB  - Spherical gamma-Fe2O3 nanoparticles with the narrow size distribution of (5 +/- 1) nm were synthesized by the method of thermal decomposition from iron acetyl acetonate precursor. The existence of super spin-glass state at low temperatures and in low applied magnetic fields was confirmed by DC magnetization measurements on a SQUID magnetometer. The comprehensive investigation of magnetic relaxation dynamics in low-temperature region was conducted through the measurements of single-stop and multiple stop ZFC memory effects, ZFC magnetization relaxation, and AC susceptibility measurements. The experimental findings revealed the peculiar change of magnetic relaxation dynamics at T approximate to 10 K, which arose as a consequence of simultaneous existence of different relaxation processes in Fe2O3 nanoparticle system. Complementarity of the applied measurements was utilized in order to single out distinct relaxation processes as well as to elucidate complex relaxation mechanisms in the investigated interacting nanoparticle system.
T2  - Journal of Nanoparticle Research
T1  - Experimental evidence for simultaneous relaxation processes in super spin glass gamma-Fe2O3 nanoparticle system
VL  - 17
IS  - 3
DO  - 10.1007/s11051-015-2952-2
ER  - 

@article{
author = "Nikolić, Violeta N. and Perović, Marija M. and Kusigerski, Vladan and Bošković, Marko and Mraković, Ana Đ. and Blanuša, Jovan and Spasojević, Vojislav",
year = "2015",
abstract = "Spherical gamma-Fe2O3 nanoparticles with the narrow size distribution of (5 +/- 1) nm were synthesized by the method of thermal decomposition from iron acetyl acetonate precursor. The existence of super spin-glass state at low temperatures and in low applied magnetic fields was confirmed by DC magnetization measurements on a SQUID magnetometer. The comprehensive investigation of magnetic relaxation dynamics in low-temperature region was conducted through the measurements of single-stop and multiple stop ZFC memory effects, ZFC magnetization relaxation, and AC susceptibility measurements. The experimental findings revealed the peculiar change of magnetic relaxation dynamics at T approximate to 10 K, which arose as a consequence of simultaneous existence of different relaxation processes in Fe2O3 nanoparticle system. Complementarity of the applied measurements was utilized in order to single out distinct relaxation processes as well as to elucidate complex relaxation mechanisms in the investigated interacting nanoparticle system.",
journal = "Journal of Nanoparticle Research",
title = "Experimental evidence for simultaneous relaxation processes in super spin glass gamma-Fe2O3 nanoparticle system",
volume = "17",
number = "3",
doi = "10.1007/s11051-015-2952-2"
}

Nikolić, V. N., Perović, M. M., Kusigerski, V., Bošković, M., Mraković, A. Đ., Blanuša, J.,& Spasojević, V.. (2015). Experimental evidence for simultaneous relaxation processes in super spin glass gamma-Fe2O3 nanoparticle system. in Journal of Nanoparticle Research, 17(3).
https://doi.org/10.1007/s11051-015-2952-2

Nikolić VN, Perović MM, Kusigerski V, Bošković M, Mraković AĐ, Blanuša J, Spasojević V. Experimental evidence for simultaneous relaxation processes in super spin glass gamma-Fe2O3 nanoparticle system. in Journal of Nanoparticle Research. 2015;17(3).
doi:10.1007/s11051-015-2952-2 .

Nikolić, Violeta N., Perović, Marija M., Kusigerski, Vladan, Bošković, Marko, Mraković, Ana Đ., Blanuša, Jovan, Spasojević, Vojislav, "Experimental evidence for simultaneous relaxation processes in super spin glass gamma-Fe2O3 nanoparticle system" in Journal of Nanoparticle Research, 17, no. 3 (2015),
https://doi.org/10.1007/s11051-015-2952-2 . .

TY  - JOUR
AU  - Maksimović, Vesna
AU  - Nikolić, Nebojša D.
AU  - Kusigerski, Vladan
AU  - Blanuša, Jovan
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/453
AB  - Cobalt 3D powder particles were successfully prepared by galvanostatic electrodeposition. The electrodeposited cobalt powders were characterized by X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and SQUID magnetometry. It was shown that the morphology, structure and magnetic properties of cobalt particles were closely associated and could be easily controlled by adjusting the electrodeposition process parameters. The morphology of cobalt powder particles was strongly affected by the hydrogen evolution reaction as a parallel reaction to cobalt electrodeposition. Depending on the applied current density, two types of powder particles were formed: dendrites at lower and spongy-like particles at higher current densities. Morphologies and structures of powder particles were correlated with their magnetic properties, and compared with those of the bulk cobalt. In comparison with the properties of bulk cobalt, the obtained 3D structutes exhibited a decreased saturation magnetization (M-S), but an enhanced coercivity (H-C), which was explained by their peculiar morphology.
T2  - Journal of the Serbian Chemical Society
T1  - Correlation between morphology and magnetic properties of electrochemically produced cobalt powder particles
VL  - 80
IS  - 2
SP  - 197
EP  - 207
DO  - 10.2298/JSC200814104M
ER  - 

@article{
author = "Maksimović, Vesna and Nikolić, Nebojša D. and Kusigerski, Vladan and Blanuša, Jovan",
year = "2015",
abstract = "Cobalt 3D powder particles were successfully prepared by galvanostatic electrodeposition. The electrodeposited cobalt powders were characterized by X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and SQUID magnetometry. It was shown that the morphology, structure and magnetic properties of cobalt particles were closely associated and could be easily controlled by adjusting the electrodeposition process parameters. The morphology of cobalt powder particles was strongly affected by the hydrogen evolution reaction as a parallel reaction to cobalt electrodeposition. Depending on the applied current density, two types of powder particles were formed: dendrites at lower and spongy-like particles at higher current densities. Morphologies and structures of powder particles were correlated with their magnetic properties, and compared with those of the bulk cobalt. In comparison with the properties of bulk cobalt, the obtained 3D structutes exhibited a decreased saturation magnetization (M-S), but an enhanced coercivity (H-C), which was explained by their peculiar morphology.",
journal = "Journal of the Serbian Chemical Society",
title = "Correlation between morphology and magnetic properties of electrochemically produced cobalt powder particles",
volume = "80",
number = "2",
pages = "197-207",
doi = "10.2298/JSC200814104M"
}

Maksimović, V., Nikolić, N. D., Kusigerski, V.,& Blanuša, J.. (2015). Correlation between morphology and magnetic properties of electrochemically produced cobalt powder particles. in Journal of the Serbian Chemical Society, 80(2), 197-207.
https://doi.org/10.2298/JSC200814104M

Maksimović V, Nikolić ND, Kusigerski V, Blanuša J. Correlation between morphology and magnetic properties of electrochemically produced cobalt powder particles. in Journal of the Serbian Chemical Society. 2015;80(2):197-207.
doi:10.2298/JSC200814104M .

Maksimović, Vesna, Nikolić, Nebojša D., Kusigerski, Vladan, Blanuša, Jovan, "Correlation between morphology and magnetic properties of electrochemically produced cobalt powder particles" in Journal of the Serbian Chemical Society, 80, no. 2 (2015):197-207,
https://doi.org/10.2298/JSC200814104M . .

TY  - CONF
AU  - Nikolić, Violeta
AU  - Spasojević, Vojislav
AU  - Kusigerski, Vladan
AU  - Perović, Marija
AU  - Mraković, Ana
AU  - Bošković, Marko
AU  - Blanuša, Jovan
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13210
AB  - Fe3O4 nanoparticles were synthesized by thermal decomposition of organic precursor (acac complex) and the structural characterization was done by TEM measurements. In order to understand magnetic behavior of the examined Fe3O4 system magnetic characterization was done by SQIUD measurements in AC and DC regime. Sample exerts memory effects and aging phenomena, all pointing to the existence of super spin glass state at low temperatures. Appropriate interpretation of the measured effects can be provided within the framework of droplet and hierarchical models. Investigation of relaxation phenomena comprised measurements of zero field cooled and thermoremanent magnetization time decay. Time dependence of the related relaxation rates showed unusual trend of slowing down with increasing temperature. The origin of observed behavior still remains an open question.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of Abstracts
T1  - Relaxation phenomena in SSG Fe3O4 nanoparticle system
SP  - 91
EP  - 91
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13210
ER  - 

@conference{
author = "Nikolić, Violeta and Spasojević, Vojislav and Kusigerski, Vladan and Perović, Marija and Mraković, Ana and Bošković, Marko and Blanuša, Jovan",
year = "2014",
abstract = "Fe3O4 nanoparticles were synthesized by thermal decomposition of organic precursor (acac complex) and the structural characterization was done by TEM measurements. In order to understand magnetic behavior of the examined Fe3O4 system magnetic characterization was done by SQIUD measurements in AC and DC regime. Sample exerts memory effects and aging phenomena, all pointing to the existence of super spin glass state at low temperatures. Appropriate interpretation of the measured effects can be provided within the framework of droplet and hierarchical models. Investigation of relaxation phenomena comprised measurements of zero field cooled and thermoremanent magnetization time decay. Time dependence of the related relaxation rates showed unusual trend of slowing down with increasing temperature. The origin of observed behavior still remains an open question.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of Abstracts",
title = "Relaxation phenomena in SSG Fe3O4 nanoparticle system",
pages = "91-91",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13210"
}

Nikolić, V., Spasojević, V., Kusigerski, V., Perović, M., Mraković, A., Bošković, M.,& Blanuša, J.. (2014). Relaxation phenomena in SSG Fe3O4 nanoparticle system. in The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of Abstracts
Belgrade : Materials Research Society of Serbia., 91-91.
https://hdl.handle.net/21.15107/rcub_vinar_13210

Nikolić V, Spasojević V, Kusigerski V, Perović M, Mraković A, Bošković M, Blanuša J. Relaxation phenomena in SSG Fe3O4 nanoparticle system. in The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of Abstracts. 2014;:91-91.
https://hdl.handle.net/21.15107/rcub_vinar_13210 .

Nikolić, Violeta, Spasojević, Vojislav, Kusigerski, Vladan, Perović, Marija, Mraković, Ana, Bošković, Marko, Blanuša, Jovan, "Relaxation phenomena in SSG Fe3O4 nanoparticle system" in The Sixteenth Annual Conference YUCOMAT 2014: Programme and the Book of Abstracts (2014):91-91,
https://hdl.handle.net/21.15107/rcub_vinar_13210 .

TY  - JOUR
AU  - Gebrel, Z.
AU  - Blanuša, Jovan
AU  - Kusigerski, Vladan
AU  - Spasojević, Vojislav
AU  - Mraković, Ana Đ.
AU  - Perović, Marija M.
AU  - Alqat, A.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5714
AB  - The single-phase polycrystalline samples of Y-2(Cu1-xMgx)(2)O-5, x = 0.0, 0.05, 0.15 were successfully synthesized by a modified self-propagating high temperature synthesis. Effects of Mg+2 substitution for Cu+2 in metamagnetic Y2Cu2O5 on its crystal structure and magnetic properties have been analyzed by X-ray diffraction and magnetic measurements performed within 2-300 K range. Mg doping was found to introduce small distortions in the main intradimmer superexchange paths so that ferromagnetic correlations decrease with Mg concentration. More significant impact of Cu substitution was found on the low temperature magnetism due to the breaking of infinite Cu-O chains. The formation of finite size chains introduces low temperature paramagnetic contribution and reduction in Neel temperature. Overall results give a strong indication that the antiferromagnetic ordering as well as metamagnetism persists up to the 15% of the Mg concentration. (C) 2013 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Crystal structure and magnetic properties of Y-2(Cu1-xMgx)(2)O-5 obtained by SHS method
VL  - 582
SP  - 186
EP  - 189
DO  - 10.1016/j.jallcom.2013.08.033
ER  - 

@article{
author = "Gebrel, Z. and Blanuša, Jovan and Kusigerski, Vladan and Spasojević, Vojislav and Mraković, Ana Đ. and Perović, Marija M. and Alqat, A.",
year = "2014",
abstract = "The single-phase polycrystalline samples of Y-2(Cu1-xMgx)(2)O-5, x = 0.0, 0.05, 0.15 were successfully synthesized by a modified self-propagating high temperature synthesis. Effects of Mg+2 substitution for Cu+2 in metamagnetic Y2Cu2O5 on its crystal structure and magnetic properties have been analyzed by X-ray diffraction and magnetic measurements performed within 2-300 K range. Mg doping was found to introduce small distortions in the main intradimmer superexchange paths so that ferromagnetic correlations decrease with Mg concentration. More significant impact of Cu substitution was found on the low temperature magnetism due to the breaking of infinite Cu-O chains. The formation of finite size chains introduces low temperature paramagnetic contribution and reduction in Neel temperature. Overall results give a strong indication that the antiferromagnetic ordering as well as metamagnetism persists up to the 15% of the Mg concentration. (C) 2013 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Crystal structure and magnetic properties of Y-2(Cu1-xMgx)(2)O-5 obtained by SHS method",
volume = "582",
pages = "186-189",
doi = "10.1016/j.jallcom.2013.08.033"
}

Gebrel, Z., Blanuša, J., Kusigerski, V., Spasojević, V., Mraković, A. Đ., Perović, M. M.,& Alqat, A.. (2014). Crystal structure and magnetic properties of Y-2(Cu1-xMgx)(2)O-5 obtained by SHS method. in Journal of Alloys and Compounds, 582, 186-189.
https://doi.org/10.1016/j.jallcom.2013.08.033

Gebrel Z, Blanuša J, Kusigerski V, Spasojević V, Mraković AĐ, Perović MM, Alqat A. Crystal structure and magnetic properties of Y-2(Cu1-xMgx)(2)O-5 obtained by SHS method. in Journal of Alloys and Compounds. 2014;582:186-189.
doi:10.1016/j.jallcom.2013.08.033 .

Gebrel, Z., Blanuša, Jovan, Kusigerski, Vladan, Spasojević, Vojislav, Mraković, Ana Đ., Perović, Marija M., Alqat, A., "Crystal structure and magnetic properties of Y-2(Cu1-xMgx)(2)O-5 obtained by SHS method" in Journal of Alloys and Compounds, 582 (2014):186-189,
https://doi.org/10.1016/j.jallcom.2013.08.033 . .

TY  - JOUR
AU  - Pavlović, Vera P.
AU  - Nikolić, Maria Vesna
AU  - Pavlović, Vladimir B.
AU  - Blanuša, Jovan
AU  - Stevanović, Suzana
AU  - Mitić, Vojislav V.
AU  - Šćepanović, Maja
AU  - Vlahović, Branislav
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5863
AB  - The structure and lattice dynamics of mechanically activated BaTiO3 was investigated in this study. Phonon behavior and crystal structure stability of the obtained nanocrystalline BaTiO3 were discussed from the view point of crystallite size effects and microstrains induced by mechanical activation. A systematic study of Raman responses indicates that mechanical activation has a distinct influence on BaTiO3 lattice spectra affecting the intensity, width, and position of Raman modes. The measured Raman spectra were deconvoluted and phonon parameters were estimated. It has been established that applied mechanical activation leads to a significant decrease in the mean crystallites size, but nevertheless enables formation of tetragonal nanocrystalline BaTiO3.
T2  - Journal of the American Ceramic Society
T1  - Raman Responses in Mechanically Activated BaTiO3
VL  - 97
IS  - 2
SP  - 601
EP  - 608
DO  - 10.1111/jace.12423
ER  - 

@article{
author = "Pavlović, Vera P. and Nikolić, Maria Vesna and Pavlović, Vladimir B. and Blanuša, Jovan and Stevanović, Suzana and Mitić, Vojislav V. and Šćepanović, Maja and Vlahović, Branislav",
year = "2014",
abstract = "The structure and lattice dynamics of mechanically activated BaTiO3 was investigated in this study. Phonon behavior and crystal structure stability of the obtained nanocrystalline BaTiO3 were discussed from the view point of crystallite size effects and microstrains induced by mechanical activation. A systematic study of Raman responses indicates that mechanical activation has a distinct influence on BaTiO3 lattice spectra affecting the intensity, width, and position of Raman modes. The measured Raman spectra were deconvoluted and phonon parameters were estimated. It has been established that applied mechanical activation leads to a significant decrease in the mean crystallites size, but nevertheless enables formation of tetragonal nanocrystalline BaTiO3.",
journal = "Journal of the American Ceramic Society",
title = "Raman Responses in Mechanically Activated BaTiO3",
volume = "97",
number = "2",
pages = "601-608",
doi = "10.1111/jace.12423"
}

Pavlović, V. P., Nikolić, M. V., Pavlović, V. B., Blanuša, J., Stevanović, S., Mitić, V. V., Šćepanović, M.,& Vlahović, B.. (2014). Raman Responses in Mechanically Activated BaTiO3. in Journal of the American Ceramic Society, 97(2), 601-608.
https://doi.org/10.1111/jace.12423

Pavlović VP, Nikolić MV, Pavlović VB, Blanuša J, Stevanović S, Mitić VV, Šćepanović M, Vlahović B. Raman Responses in Mechanically Activated BaTiO3. in Journal of the American Ceramic Society. 2014;97(2):601-608.
doi:10.1111/jace.12423 .

Pavlović, Vera P., Nikolić, Maria Vesna, Pavlović, Vladimir B., Blanuša, Jovan, Stevanović, Suzana, Mitić, Vojislav V., Šćepanović, Maja, Vlahović, Branislav, "Raman Responses in Mechanically Activated BaTiO3" in Journal of the American Ceramic Society, 97, no. 2 (2014):601-608,
https://doi.org/10.1111/jace.12423 . .

TY  - CONF
AU  - Nikolić, Violeta
AU  - Spasojević, Vojislav
AU  - Kusigerski, Vladan
AU  - Perović, Marija
AU  - Mraković, Ana
AU  - Bošković, Marko
AU  - Blanuša, Jovan
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13211
AB  - The research aim was to investigate the magnetic properties of strongly interacting Fe3O4 nanoparticles. Monodisperse nanoparticles were prepared by thermal decomposition of iron (III) acetylacetonate. Transmission electron microscopy pointed to the narrow particle size distribution with the mean particle size of (4.87±1.10) nm. The magnetic properties were studied by means of SQUID magnetometer, with AC and DC measurements carried in the wide range of applied magnetic field, temperature and frequencies. Magnetic characterization proved superparamagnetic behaviour at high, as well as spin glass like (SGL) properties at low temperatures. The experimental fingerprints for SGL behaviour were found in the observed memory effects.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - 12th Young Researchers' Conference Materials Sciences and Engineering : Program and the book of abstracts
T1  - Spin glass like behaviour of magnetite nanoparticle system obtained by thermal decomposition of acetylacetonate precursor
SP  - 33
EP  - 33
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13211
ER  - 

@conference{
author = "Nikolić, Violeta and Spasojević, Vojislav and Kusigerski, Vladan and Perović, Marija and Mraković, Ana and Bošković, Marko and Blanuša, Jovan",
year = "2013",
abstract = "The research aim was to investigate the magnetic properties of strongly interacting Fe3O4 nanoparticles. Monodisperse nanoparticles were prepared by thermal decomposition of iron (III) acetylacetonate. Transmission electron microscopy pointed to the narrow particle size distribution with the mean particle size of (4.87±1.10) nm. The magnetic properties were studied by means of SQUID magnetometer, with AC and DC measurements carried in the wide range of applied magnetic field, temperature and frequencies. Magnetic characterization proved superparamagnetic behaviour at high, as well as spin glass like (SGL) properties at low temperatures. The experimental fingerprints for SGL behaviour were found in the observed memory effects.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "12th Young Researchers' Conference Materials Sciences and Engineering : Program and the book of abstracts",
title = "Spin glass like behaviour of magnetite nanoparticle system obtained by thermal decomposition of acetylacetonate precursor",
pages = "33-33",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13211"
}

Nikolić, V., Spasojević, V., Kusigerski, V., Perović, M., Mraković, A., Bošković, M.,& Blanuša, J.. (2013). Spin glass like behaviour of magnetite nanoparticle system obtained by thermal decomposition of acetylacetonate precursor. in 12th Young Researchers' Conference Materials Sciences and Engineering : Program and the book of abstracts
Belgrade : Institute of Technical Sciences of SASA., 33-33.
https://hdl.handle.net/21.15107/rcub_vinar_13211

Nikolić V, Spasojević V, Kusigerski V, Perović M, Mraković A, Bošković M, Blanuša J. Spin glass like behaviour of magnetite nanoparticle system obtained by thermal decomposition of acetylacetonate precursor. in 12th Young Researchers' Conference Materials Sciences and Engineering : Program and the book of abstracts. 2013;:33-33.
https://hdl.handle.net/21.15107/rcub_vinar_13211 .

Nikolić, Violeta, Spasojević, Vojislav, Kusigerski, Vladan, Perović, Marija, Mraković, Ana, Bošković, Marko, Blanuša, Jovan, "Spin glass like behaviour of magnetite nanoparticle system obtained by thermal decomposition of acetylacetonate precursor" in 12th Young Researchers' Conference Materials Sciences and Engineering : Program and the book of abstracts (2013):33-33,
https://hdl.handle.net/21.15107/rcub_vinar_13211 .

TY  - JOUR
AU  - Alqat, Aboalqasim
AU  - Gebrel, Zohra
AU  - Kusigerski, Vladan
AU  - Spasojević, Vojislav
AU  - Mihalik, Marian
AU  - Mihalik, Matus
AU  - Blanuša, Jovan
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5361
AB  - A new synthesis route for obtaining a single-phase hexagonal YMnO3 was developed, based on the annealing of the amorphous precursor powder obtained by the glycine-nitrate combustion method. The process was monitored by XRD as well as by magnetic and heat capacity measurements. The analysis of these data shows that precursor powder undergoes a gradual phase transformation that depends on the annealing temperature. The metastable orthorhombic YMnO3 phase is the first to appear at temperatures below 700 degrees C, while a mixture of ortho- and hexa-phases was found to exist within the 700-900 degrees C range. An almost complete conversion to hexaphase occurs at 900-1000 degrees C, but to obtain the pure, well crystallized h-YMnO3 phase an annealing temperature of 1300 degrees C was necessary. The synthesis method applied in this work has been proved to be more convenient for obtaining single-phase h-YMnO3 than by a solid state reaction. In addition, it is capable of producing sample free of parasitic phases that are often present in specimens obtained by other synthesis methods. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Synthesis of hexagonal YMnO3 from precursor obtained by the glycine-nitrate process
VL  - 39
IS  - 3
SP  - 3183
EP  - 3188
DO  - 10.1016/j.ceramint.2012.10.002
ER  - 

@article{
author = "Alqat, Aboalqasim and Gebrel, Zohra and Kusigerski, Vladan and Spasojević, Vojislav and Mihalik, Marian and Mihalik, Matus and Blanuša, Jovan",
year = "2013",
abstract = "A new synthesis route for obtaining a single-phase hexagonal YMnO3 was developed, based on the annealing of the amorphous precursor powder obtained by the glycine-nitrate combustion method. The process was monitored by XRD as well as by magnetic and heat capacity measurements. The analysis of these data shows that precursor powder undergoes a gradual phase transformation that depends on the annealing temperature. The metastable orthorhombic YMnO3 phase is the first to appear at temperatures below 700 degrees C, while a mixture of ortho- and hexa-phases was found to exist within the 700-900 degrees C range. An almost complete conversion to hexaphase occurs at 900-1000 degrees C, but to obtain the pure, well crystallized h-YMnO3 phase an annealing temperature of 1300 degrees C was necessary. The synthesis method applied in this work has been proved to be more convenient for obtaining single-phase h-YMnO3 than by a solid state reaction. In addition, it is capable of producing sample free of parasitic phases that are often present in specimens obtained by other synthesis methods. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Synthesis of hexagonal YMnO3 from precursor obtained by the glycine-nitrate process",
volume = "39",
number = "3",
pages = "3183-3188",
doi = "10.1016/j.ceramint.2012.10.002"
}

Alqat, A., Gebrel, Z., Kusigerski, V., Spasojević, V., Mihalik, M., Mihalik, M.,& Blanuša, J.. (2013). Synthesis of hexagonal YMnO3 from precursor obtained by the glycine-nitrate process. in Ceramics International, 39(3), 3183-3188.
https://doi.org/10.1016/j.ceramint.2012.10.002

Alqat A, Gebrel Z, Kusigerski V, Spasojević V, Mihalik M, Mihalik M, Blanuša J. Synthesis of hexagonal YMnO3 from precursor obtained by the glycine-nitrate process. in Ceramics International. 2013;39(3):3183-3188.
doi:10.1016/j.ceramint.2012.10.002 .

Alqat, Aboalqasim, Gebrel, Zohra, Kusigerski, Vladan, Spasojević, Vojislav, Mihalik, Marian, Mihalik, Matus, Blanuša, Jovan, "Synthesis of hexagonal YMnO3 from precursor obtained by the glycine-nitrate process" in Ceramics International, 39, no. 3 (2013):3183-3188,
https://doi.org/10.1016/j.ceramint.2012.10.002 . .

TY  - JOUR
AU  - Perović, Marija M.
AU  - Kusigerski, Vladan
AU  - Spasojević, Vojislav
AU  - Mraković, Ana Đ.
AU  - Blanuša, Jovan
AU  - Zentkova, M.
AU  - Mihalik, M.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5395
AB  - In this paper, we present the results of a systematic study of nonequilibrium dynamics in a strongly interacting super spin glass (SSG) nanoparticle La0.7Ca0.3MnO3 system by alternating current (ac) susceptibility measurements. Cole-Cole analysis of the obtained data revealed the simultaneous existence of two separated relaxation processes, which can be assigned to the relaxation of different magnetic entities. Along with the expected relaxation of the collective SSG phase, the existence of individual, nonagglomerated particles, which do not take part in the collective phase and relax independently, was proposed. A full dynamical scaling analysis was performed in order to elucidate the nature of the transition to a low-temperature SSG state in the interacting La0.7Ca0.3MnO3 nanoparticle sample.
T2  - Journal of Physics. D: Applied Physics
T1  - An ac susceptibility study of spin dynamics in a super spin glass nanoparticle La0.7Ca0.3MnO3 system: simultaneous relaxation processes
VL  - 46
IS  - 16
DO  - 10.1088/0022-3727/46/16/165001
ER  - 

@article{
author = "Perović, Marija M. and Kusigerski, Vladan and Spasojević, Vojislav and Mraković, Ana Đ. and Blanuša, Jovan and Zentkova, M. and Mihalik, M.",
year = "2013",
abstract = "In this paper, we present the results of a systematic study of nonequilibrium dynamics in a strongly interacting super spin glass (SSG) nanoparticle La0.7Ca0.3MnO3 system by alternating current (ac) susceptibility measurements. Cole-Cole analysis of the obtained data revealed the simultaneous existence of two separated relaxation processes, which can be assigned to the relaxation of different magnetic entities. Along with the expected relaxation of the collective SSG phase, the existence of individual, nonagglomerated particles, which do not take part in the collective phase and relax independently, was proposed. A full dynamical scaling analysis was performed in order to elucidate the nature of the transition to a low-temperature SSG state in the interacting La0.7Ca0.3MnO3 nanoparticle sample.",
journal = "Journal of Physics. D: Applied Physics",
title = "An ac susceptibility study of spin dynamics in a super spin glass nanoparticle La0.7Ca0.3MnO3 system: simultaneous relaxation processes",
volume = "46",
number = "16",
doi = "10.1088/0022-3727/46/16/165001"
}

Perović, M. M., Kusigerski, V., Spasojević, V., Mraković, A. Đ., Blanuša, J., Zentkova, M.,& Mihalik, M.. (2013). An ac susceptibility study of spin dynamics in a super spin glass nanoparticle La0.7Ca0.3MnO3 system: simultaneous relaxation processes. in Journal of Physics. D: Applied Physics, 46(16).
https://doi.org/10.1088/0022-3727/46/16/165001

Perović MM, Kusigerski V, Spasojević V, Mraković AĐ, Blanuša J, Zentkova M, Mihalik M. An ac susceptibility study of spin dynamics in a super spin glass nanoparticle La0.7Ca0.3MnO3 system: simultaneous relaxation processes. in Journal of Physics. D: Applied Physics. 2013;46(16).
doi:10.1088/0022-3727/46/16/165001 .

Perović, Marija M., Kusigerski, Vladan, Spasojević, Vojislav, Mraković, Ana Đ., Blanuša, Jovan, Zentkova, M., Mihalik, M., "An ac susceptibility study of spin dynamics in a super spin glass nanoparticle La0.7Ca0.3MnO3 system: simultaneous relaxation processes" in Journal of Physics. D: Applied Physics, 46, no. 16 (2013),
https://doi.org/10.1088/0022-3727/46/16/165001 . .

TY  - JOUR
AU  - Mraković, Ana Đ.
AU  - Blanuša, Jovan
AU  - Primc, Darinka
AU  - Perović, Marija M.
AU  - Jagličić, Zvonko
AU  - Kusigerski, Vladan
AU  - Spasojević, Vojislav
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5463
AB  - A modified solid-state combustion route was developed for the preparation of nanocrystalline manganite La0.7Ca0.3MnO3 in a single-step process, using metal nitrates and glucose/KNO3 redox mixture. The obtained sample was found to crystallize within O type of orthorhombic perovskite structure (space group Pnma), without the presence of other structural phases or impurities. Nanoparticles are found to have particle size in the range 12-35 nm, and to be highly crystalline without the presence of amorphous surface layer. Magnetic measurements show that nanoparticles display bulk-like magnetic properties, with ferromagnetic phase transition at 125 K and the absence of superparamagnetic or spin-glass behavior. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Modified self-propagating high-temperature synthesis of nanosized La0.7Ca0.3MnO3
VL  - 39
IS  - 4
SP  - 3771
EP  - 3777
DO  - 10.1016/j.ceramint.2012.10.216
ER  - 

@article{
author = "Mraković, Ana Đ. and Blanuša, Jovan and Primc, Darinka and Perović, Marija M. and Jagličić, Zvonko and Kusigerski, Vladan and Spasojević, Vojislav",
year = "2013",
abstract = "A modified solid-state combustion route was developed for the preparation of nanocrystalline manganite La0.7Ca0.3MnO3 in a single-step process, using metal nitrates and glucose/KNO3 redox mixture. The obtained sample was found to crystallize within O type of orthorhombic perovskite structure (space group Pnma), without the presence of other structural phases or impurities. Nanoparticles are found to have particle size in the range 12-35 nm, and to be highly crystalline without the presence of amorphous surface layer. Magnetic measurements show that nanoparticles display bulk-like magnetic properties, with ferromagnetic phase transition at 125 K and the absence of superparamagnetic or spin-glass behavior. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Modified self-propagating high-temperature synthesis of nanosized La0.7Ca0.3MnO3",
volume = "39",
number = "4",
pages = "3771-3777",
doi = "10.1016/j.ceramint.2012.10.216"
}

Mraković, A. Đ., Blanuša, J., Primc, D., Perović, M. M., Jagličić, Z., Kusigerski, V.,& Spasojević, V.. (2013). Modified self-propagating high-temperature synthesis of nanosized La0.7Ca0.3MnO3. in Ceramics International, 39(4), 3771-3777.
https://doi.org/10.1016/j.ceramint.2012.10.216

Mraković AĐ, Blanuša J, Primc D, Perović MM, Jagličić Z, Kusigerski V, Spasojević V. Modified self-propagating high-temperature synthesis of nanosized La0.7Ca0.3MnO3. in Ceramics International. 2013;39(4):3771-3777.
doi:10.1016/j.ceramint.2012.10.216 .

Mraković, Ana Đ., Blanuša, Jovan, Primc, Darinka, Perović, Marija M., Jagličić, Zvonko, Kusigerski, Vladan, Spasojević, Vojislav, "Modified self-propagating high-temperature synthesis of nanosized La0.7Ca0.3MnO3" in Ceramics International, 39, no. 4 (2013):3771-3777,
https://doi.org/10.1016/j.ceramint.2012.10.216 . .

TY  - JOUR
AU  - Gebrel, Z.
AU  - Blanuša, Jovan
AU  - Spasojević, Vojislav
AU  - Kusigerski, Vladan
AU  - Mraković, Ana Đ.
AU  - Alqat, A.
AU  - Perović, Marija M.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5515
AB  - Polycrystalline samples of Y2Cu2O5 were for the first time sintered from precursors obtained by two combustion routes - the glycine-nitrate method (sample S1) and a modified self-propagating high-temperature synthesis (sample S2). The detailed X-ray diffraction analysis has confirmed that both samples are well crystallized and single phase, with the high crystallization degree and cation ordering within a Cu sublattice. Magnetic characterization has shown magnetic behavior typical of pure Y2Cu2O5. The distinctive advantages of these new synthesis routes in comparison to the ceramic sintering are in simplification of the overall procedure as well as in a significant reduction of synthesis duration from several days down to 31 h (S1) or 12 h (S2). (C) 2013 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Combustion synthesis as a novel approach in preparation of polycrystalline Y2Cu2O5
VL  - 568
SP  - 55
EP  - 59
DO  - 10.1016/j.jallcom.2013.03.133
ER  - 

@article{
author = "Gebrel, Z. and Blanuša, Jovan and Spasojević, Vojislav and Kusigerski, Vladan and Mraković, Ana Đ. and Alqat, A. and Perović, Marija M.",
year = "2013",
abstract = "Polycrystalline samples of Y2Cu2O5 were for the first time sintered from precursors obtained by two combustion routes - the glycine-nitrate method (sample S1) and a modified self-propagating high-temperature synthesis (sample S2). The detailed X-ray diffraction analysis has confirmed that both samples are well crystallized and single phase, with the high crystallization degree and cation ordering within a Cu sublattice. Magnetic characterization has shown magnetic behavior typical of pure Y2Cu2O5. The distinctive advantages of these new synthesis routes in comparison to the ceramic sintering are in simplification of the overall procedure as well as in a significant reduction of synthesis duration from several days down to 31 h (S1) or 12 h (S2). (C) 2013 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Combustion synthesis as a novel approach in preparation of polycrystalline Y2Cu2O5",
volume = "568",
pages = "55-59",
doi = "10.1016/j.jallcom.2013.03.133"
}

Gebrel, Z., Blanuša, J., Spasojević, V., Kusigerski, V., Mraković, A. Đ., Alqat, A.,& Perović, M. M.. (2013). Combustion synthesis as a novel approach in preparation of polycrystalline Y2Cu2O5. in Journal of Alloys and Compounds, 568, 55-59.
https://doi.org/10.1016/j.jallcom.2013.03.133

Gebrel Z, Blanuša J, Spasojević V, Kusigerski V, Mraković AĐ, Alqat A, Perović MM. Combustion synthesis as a novel approach in preparation of polycrystalline Y2Cu2O5. in Journal of Alloys and Compounds. 2013;568:55-59.
doi:10.1016/j.jallcom.2013.03.133 .

Gebrel, Z., Blanuša, Jovan, Spasojević, Vojislav, Kusigerski, Vladan, Mraković, Ana Đ., Alqat, A., Perović, Marija M., "Combustion synthesis as a novel approach in preparation of polycrystalline Y2Cu2O5" in Journal of Alloys and Compounds, 568 (2013):55-59,
https://doi.org/10.1016/j.jallcom.2013.03.133 . .

TY  - JOUR
AU  - Trandafilović, Lidija V.
AU  - Bibić, Nataša M.
AU  - Georges, M. K.
AU  - Blanuša, Jovan
AU  - Radhakrishnan, T.
AU  - Đoković, Vladimir
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7027
AB  - Nanostructured cadmium selenide (CdSe) and lead sulfide (PbS) semiconductors were prepared in a poly(2-(dimethylamino)ethyl methacrylate-co-acrylic acid) matrix. The obtained nanoparticles were characterized by using optical and structural methods. Co-polymers were synthesized in two different molar ratios of pDMAEMA: acrylic acid monomer units (1 : 2, 1 : 1). Transmission electron microscopy analysis confirmed the presence of nano-sized CdSe and PbS particles. In the case of CdSe, a shift of the onset of the optical absorption toward lower wavelengths was observed. X-ray diffraction analysis revealed that both CdSe and PbS nanoparticles have cubic crystal structure.
T2  - Physica Scripta
T1  - Semiconductor nanoparticles in poly((2-dimethylamino)ethyl methacrylate-co-acrylic acid) co-polymers
VL  - T157
DO  - 10.1088/0031-8949/2013/T157/014063
ER  - 

@article{
author = "Trandafilović, Lidija V. and Bibić, Nataša M. and Georges, M. K. and Blanuša, Jovan and Radhakrishnan, T. and Đoković, Vladimir",
year = "2013",
abstract = "Nanostructured cadmium selenide (CdSe) and lead sulfide (PbS) semiconductors were prepared in a poly(2-(dimethylamino)ethyl methacrylate-co-acrylic acid) matrix. The obtained nanoparticles were characterized by using optical and structural methods. Co-polymers were synthesized in two different molar ratios of pDMAEMA: acrylic acid monomer units (1 : 2, 1 : 1). Transmission electron microscopy analysis confirmed the presence of nano-sized CdSe and PbS particles. In the case of CdSe, a shift of the onset of the optical absorption toward lower wavelengths was observed. X-ray diffraction analysis revealed that both CdSe and PbS nanoparticles have cubic crystal structure.",
journal = "Physica Scripta",
title = "Semiconductor nanoparticles in poly((2-dimethylamino)ethyl methacrylate-co-acrylic acid) co-polymers",
volume = "T157",
doi = "10.1088/0031-8949/2013/T157/014063"
}

Trandafilović, L. V., Bibić, N. M., Georges, M. K., Blanuša, J., Radhakrishnan, T.,& Đoković, V.. (2013). Semiconductor nanoparticles in poly((2-dimethylamino)ethyl methacrylate-co-acrylic acid) co-polymers. in Physica Scripta, T157.
https://doi.org/10.1088/0031-8949/2013/T157/014063

Trandafilović LV, Bibić NM, Georges MK, Blanuša J, Radhakrishnan T, Đoković V. Semiconductor nanoparticles in poly((2-dimethylamino)ethyl methacrylate-co-acrylic acid) co-polymers. in Physica Scripta. 2013;T157.
doi:10.1088/0031-8949/2013/T157/014063 .

Trandafilović, Lidija V., Bibić, Nataša M., Georges, M. K., Blanuša, Jovan, Radhakrishnan, T., Đoković, Vladimir, "Semiconductor nanoparticles in poly((2-dimethylamino)ethyl methacrylate-co-acrylic acid) co-polymers" in Physica Scripta, T157 (2013),
https://doi.org/10.1088/0031-8949/2013/T157/014063 . .

TY  - JOUR
AU  - Antić, Bratislav
AU  - Perović, Marija M.
AU  - Kremenović, Aleksandar S.
AU  - Blanuša, Jovan
AU  - Spasojević, Vojislav
AU  - Vulić, Predrag J.
AU  - Bessais, Lotfi
AU  - Božin, Emil S.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5305
AB  - The evolution of the magnetic state, crystal structure and microstructure parameters of nanocrystalline zinc-ferrite, tuned by thermal annealing of similar to 4 nm nanoparticles, was systematically studied by complementary characterization methods. Structural analysis of neutron and synchrotron x-ray radiation data revealed a mixed cation distribution in the nanoparticle samples, with the degree of inversion systematically decreasing from 0.25 in an as-prepared nanocrystalline sample to a non-inverted spinel structure with a normal cation distribution in the bulk counterpart. The results of DC magnetization and Mossbauer spectroscopy experiments indicated a superparamagnetic relaxation in similar to 4 nm nanoparticles, albeit with different freezing temperatures T-f of 27.5 K and 46 K, respectively. The quadrupole splitting parameter decreases with the annealing temperature due to cation redistribution between the tetrahedral and octahedral sites of the spinel structure and the associated defects. DC magnetization measurements indicated the existence of significant interparticle interactions among nanoparticles (superspins). Additional confirmation for the presence of interparticle interactions was found from the fit of the Tf(H) dependence to the AT line, from which a value of the anisotropy constant of K-eff = 5.6 x 10(5) erg cm(-3) was deduced. Further evidence for strong interparticle interactions was found from AC susceptibility measurements, where the frequency dependence of the freezing temperature T-f(f) was satisfactory described by both Vogel-Fulcher and dynamic scaling theory, both applicable for interacting systems. The parameters obtained from these fits suggest collective freezing of magnetic moments at T-f.
T2  - Journal of Physics: Condensed Matter
T1  - An integrated study of thermal treatment effects on the microstructure and magnetic properties of Zn-ferrite nanoparticles
VL  - 25
IS  - 8
DO  - 10.1088/0953-8984/25/8/086001
ER  - 

@article{
author = "Antić, Bratislav and Perović, Marija M. and Kremenović, Aleksandar S. and Blanuša, Jovan and Spasojević, Vojislav and Vulić, Predrag J. and Bessais, Lotfi and Božin, Emil S.",
year = "2013",
abstract = "The evolution of the magnetic state, crystal structure and microstructure parameters of nanocrystalline zinc-ferrite, tuned by thermal annealing of similar to 4 nm nanoparticles, was systematically studied by complementary characterization methods. Structural analysis of neutron and synchrotron x-ray radiation data revealed a mixed cation distribution in the nanoparticle samples, with the degree of inversion systematically decreasing from 0.25 in an as-prepared nanocrystalline sample to a non-inverted spinel structure with a normal cation distribution in the bulk counterpart. The results of DC magnetization and Mossbauer spectroscopy experiments indicated a superparamagnetic relaxation in similar to 4 nm nanoparticles, albeit with different freezing temperatures T-f of 27.5 K and 46 K, respectively. The quadrupole splitting parameter decreases with the annealing temperature due to cation redistribution between the tetrahedral and octahedral sites of the spinel structure and the associated defects. DC magnetization measurements indicated the existence of significant interparticle interactions among nanoparticles (superspins). Additional confirmation for the presence of interparticle interactions was found from the fit of the Tf(H) dependence to the AT line, from which a value of the anisotropy constant of K-eff = 5.6 x 10(5) erg cm(-3) was deduced. Further evidence for strong interparticle interactions was found from AC susceptibility measurements, where the frequency dependence of the freezing temperature T-f(f) was satisfactory described by both Vogel-Fulcher and dynamic scaling theory, both applicable for interacting systems. The parameters obtained from these fits suggest collective freezing of magnetic moments at T-f.",
journal = "Journal of Physics: Condensed Matter",
title = "An integrated study of thermal treatment effects on the microstructure and magnetic properties of Zn-ferrite nanoparticles",
volume = "25",
number = "8",
doi = "10.1088/0953-8984/25/8/086001"
}

Antić, B., Perović, M. M., Kremenović, A. S., Blanuša, J., Spasojević, V., Vulić, P. J., Bessais, L.,& Božin, E. S.. (2013). An integrated study of thermal treatment effects on the microstructure and magnetic properties of Zn-ferrite nanoparticles. in Journal of Physics: Condensed Matter, 25(8).
https://doi.org/10.1088/0953-8984/25/8/086001

Antić B, Perović MM, Kremenović AS, Blanuša J, Spasojević V, Vulić PJ, Bessais L, Božin ES. An integrated study of thermal treatment effects on the microstructure and magnetic properties of Zn-ferrite nanoparticles. in Journal of Physics: Condensed Matter. 2013;25(8).
doi:10.1088/0953-8984/25/8/086001 .

Antić, Bratislav, Perović, Marija M., Kremenović, Aleksandar S., Blanuša, Jovan, Spasojević, Vojislav, Vulić, Predrag J., Bessais, Lotfi, Božin, Emil S., "An integrated study of thermal treatment effects on the microstructure and magnetic properties of Zn-ferrite nanoparticles" in Journal of Physics: Condensed Matter, 25, no. 8 (2013),
https://doi.org/10.1088/0953-8984/25/8/086001 . .

TY  - JOUR
AU  - Perović, Marija M.
AU  - Mraković, Ana Đ.
AU  - Kusigerski, Vladan
AU  - Blanuša, Jovan
AU  - Spasojević, Vojislav
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5059
AB  - Investigation of complex, nonequilibrium dynamics of super spin glass nanoparticle La0.7Ca0.3MnO3 sample was conducted through the comprehensive set of magnetization relaxation measurements. It comprised measurements of thermoremanent and zero-field cooled magnetization time decay under various temperature and field conditions, as well as study of the ageing effect for different waiting times. A variety of theoretical models dealing with nonequilibrium dynamics in spin glasses was successfully implemented in the description of experimentally observed relaxation phenomena. Collective behaviour observed at low temperatures and intermediate magnetic fields was found to be the consequence of the random orientation of easy axes and significant dipolar interactions between nanoparticle moments. (c) 2012 Elsevier B.V. All rights reserved.
T2  - Materials Chemistry and Physics
T1  - Relaxation phenomena in super spin glass nanoparticle manganite La0.7Ca0.3MnO3
VL  - 136
IS  - 1
SP  - 196
EP  - 204
DO  - 10.1016/j.matchemphys.2012.06.052
ER  - 

@article{
author = "Perović, Marija M. and Mraković, Ana Đ. and Kusigerski, Vladan and Blanuša, Jovan and Spasojević, Vojislav",
year = "2012",
abstract = "Investigation of complex, nonequilibrium dynamics of super spin glass nanoparticle La0.7Ca0.3MnO3 sample was conducted through the comprehensive set of magnetization relaxation measurements. It comprised measurements of thermoremanent and zero-field cooled magnetization time decay under various temperature and field conditions, as well as study of the ageing effect for different waiting times. A variety of theoretical models dealing with nonequilibrium dynamics in spin glasses was successfully implemented in the description of experimentally observed relaxation phenomena. Collective behaviour observed at low temperatures and intermediate magnetic fields was found to be the consequence of the random orientation of easy axes and significant dipolar interactions between nanoparticle moments. (c) 2012 Elsevier B.V. All rights reserved.",
journal = "Materials Chemistry and Physics",
title = "Relaxation phenomena in super spin glass nanoparticle manganite La0.7Ca0.3MnO3",
volume = "136",
number = "1",
pages = "196-204",
doi = "10.1016/j.matchemphys.2012.06.052"
}

Perović, M. M., Mraković, A. Đ., Kusigerski, V., Blanuša, J.,& Spasojević, V.. (2012). Relaxation phenomena in super spin glass nanoparticle manganite La0.7Ca0.3MnO3. in Materials Chemistry and Physics, 136(1), 196-204.
https://doi.org/10.1016/j.matchemphys.2012.06.052

Perović MM, Mraković AĐ, Kusigerski V, Blanuša J, Spasojević V. Relaxation phenomena in super spin glass nanoparticle manganite La0.7Ca0.3MnO3. in Materials Chemistry and Physics. 2012;136(1):196-204.
doi:10.1016/j.matchemphys.2012.06.052 .

Perović, Marija M., Mraković, Ana Đ., Kusigerski, Vladan, Blanuša, Jovan, Spasojević, Vojislav, "Relaxation phenomena in super spin glass nanoparticle manganite La0.7Ca0.3MnO3" in Materials Chemistry and Physics, 136, no. 1 (2012):196-204,
https://doi.org/10.1016/j.matchemphys.2012.06.052 . .

TY  - JOUR
AU  - Alqat, Aboalqasim
AU  - Gebrel, Zohra
AU  - Spasojević, Vojislav
AU  - Kusigerski, Vladan
AU  - Bošković, Snežana B.
AU  - Blanuša, Jovan
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5265
AB  - The electron-doped magnetic nanoparticles of Ca1-xYxMnO3 (x = 0, 0.05, 0.10, 0.15, 0.20, and 0.30) manganite with an average particle size of 50 nm are analyzed and discussed in relation to their bulk counterparts. Nanoparticle samples show dominant anti-ferromagnetic ordering with a significant increase of coercivity, with the maximum value of 0.9 T for x = 0. Particle size reduction in Ca1-xYxMnO3 retains the bulk-like magnetic behavior of samples having up to 15% of Y3+, with the small ferromagnetic contribution from disordered surface spins. Suppression of charge ordering state and enhancement of saturation magnetization were found in samples with higher Y3+ concentration (x = 0.2, 0.3), indicating high ferromagnetic contribution in these samples.
T2  - Nuclear technology and radiation protection
T1  - Influence of the Particle Size Reduction on Magnetic Properties of Electron-Doped Ca1-Xyxmno3
VL  - 27
IS  - 4
SP  - 351
EP  - 354
DO  - 10.2298/NTRP1204351A
ER  - 

@article{
author = "Alqat, Aboalqasim and Gebrel, Zohra and Spasojević, Vojislav and Kusigerski, Vladan and Bošković, Snežana B. and Blanuša, Jovan",
year = "2012",
abstract = "The electron-doped magnetic nanoparticles of Ca1-xYxMnO3 (x = 0, 0.05, 0.10, 0.15, 0.20, and 0.30) manganite with an average particle size of 50 nm are analyzed and discussed in relation to their bulk counterparts. Nanoparticle samples show dominant anti-ferromagnetic ordering with a significant increase of coercivity, with the maximum value of 0.9 T for x = 0. Particle size reduction in Ca1-xYxMnO3 retains the bulk-like magnetic behavior of samples having up to 15% of Y3+, with the small ferromagnetic contribution from disordered surface spins. Suppression of charge ordering state and enhancement of saturation magnetization were found in samples with higher Y3+ concentration (x = 0.2, 0.3), indicating high ferromagnetic contribution in these samples.",
journal = "Nuclear technology and radiation protection",
title = "Influence of the Particle Size Reduction on Magnetic Properties of Electron-Doped Ca1-Xyxmno3",
volume = "27",
number = "4",
pages = "351-354",
doi = "10.2298/NTRP1204351A"
}

Alqat, A., Gebrel, Z., Spasojević, V., Kusigerski, V., Bošković, S. B.,& Blanuša, J.. (2012). Influence of the Particle Size Reduction on Magnetic Properties of Electron-Doped Ca1-Xyxmno3. in Nuclear technology and radiation protection, 27(4), 351-354.
https://doi.org/10.2298/NTRP1204351A

Alqat A, Gebrel Z, Spasojević V, Kusigerski V, Bošković SB, Blanuša J. Influence of the Particle Size Reduction on Magnetic Properties of Electron-Doped Ca1-Xyxmno3. in Nuclear technology and radiation protection. 2012;27(4):351-354.
doi:10.2298/NTRP1204351A .

Alqat, Aboalqasim, Gebrel, Zohra, Spasojević, Vojislav, Kusigerski, Vladan, Bošković, Snežana B., Blanuša, Jovan, "Influence of the Particle Size Reduction on Magnetic Properties of Electron-Doped Ca1-Xyxmno3" in Nuclear technology and radiation protection, 27, no. 4 (2012):351-354,
https://doi.org/10.2298/NTRP1204351A . .

TY  - CONF
AU  - Pavlović, Vera P.
AU  - Pavlović, Vladimir B.
AU  - Blanuša, Jovan
AU  - Branković, Goran O.
AU  - Spreitzer, Matjaž
AU  - Krstić, Jelena
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/527
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7470
AB  - In order to obtain nanocrystalline material which can be used in MLCC production, the investigations of the influence of BaTiO3 powder tribophysical activation (TPA) on its structural changes, dielectric and ferroelectric properties have been performed. Microstructure development and crystal structure have been studied by mercury porosimetry method, SEM, EDS and X-ray powder diffraction analyses. The modifications of dielectric and ferroelectric properties of sintered samples have been examined and correlated with observed structural changes induced by TPA of starting powders. It has been found that dielectric and ferroelectric properties of tribophysically activated BaTiO3 could be tuned by controlling the grain size and lattice strain of activated nanostructured material.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade
T1  - Structural Changes, Dielectric and Ferroelectric Properties of Tribophysically Activated BaTiO3
SP  - 25
EP  - 25
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7470
ER  - 

@conference{
author = "Pavlović, Vera P. and Pavlović, Vladimir B. and Blanuša, Jovan and Branković, Goran O. and Spreitzer, Matjaž and Krstić, Jelena",
year = "2012",
abstract = "In order to obtain nanocrystalline material which can be used in MLCC production, the investigations of the influence of BaTiO3 powder tribophysical activation (TPA) on its structural changes, dielectric and ferroelectric properties have been performed. Microstructure development and crystal structure have been studied by mercury porosimetry method, SEM, EDS and X-ray powder diffraction analyses. The modifications of dielectric and ferroelectric properties of sintered samples have been examined and correlated with observed structural changes induced by TPA of starting powders. It has been found that dielectric and ferroelectric properties of tribophysically activated BaTiO3 could be tuned by controlling the grain size and lattice strain of activated nanostructured material.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade",
title = "Structural Changes, Dielectric and Ferroelectric Properties of Tribophysically Activated BaTiO3",
pages = "25-25",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7470"
}

Pavlović, V. P., Pavlović, V. B., Blanuša, J., Branković, G. O., Spreitzer, M.,& Krstić, J.. (2012). Structural Changes, Dielectric and Ferroelectric Properties of Tribophysically Activated BaTiO3. in Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade
Belgrade : Serbian Ceramic Society., 25-25.
https://hdl.handle.net/21.15107/rcub_vinar_7470

Pavlović VP, Pavlović VB, Blanuša J, Branković GO, Spreitzer M, Krstić J. Structural Changes, Dielectric and Ferroelectric Properties of Tribophysically Activated BaTiO3. in Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade. 2012;:25-25.
https://hdl.handle.net/21.15107/rcub_vinar_7470 .

Pavlović, Vera P., Pavlović, Vladimir B., Blanuša, Jovan, Branković, Goran O., Spreitzer, Matjaž, Krstić, Jelena, "Structural Changes, Dielectric and Ferroelectric Properties of Tribophysically Activated BaTiO3" in Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade (2012):25-25,
https://hdl.handle.net/21.15107/rcub_vinar_7470 .

TY  - JOUR
AU  - Milivojević, Dušan
AU  - Babić-Stojić, Branka S.
AU  - Blanuša, Jovan
AU  - Kovač, Janez
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6923
AB  - Room temperature ferromagnetic properties of Zn-Mn-O show evident dependence on manganese concentration and preparation conditions. We systematically studied series of samples with manganese concentration ranging from 0 to 10 at.%, prepared in air at thermal treatment temperatures ranging from 400 to 900 degrees tau C. The samples were investigated by X-ray diffraction, TEM, magnetization measurements and XPS spectroscopy. XPS analyses of surface composition, chemical bonding and XPS depth profiling were successfully employed on powder revealing the chemical composition at the surface of the grains and underneath. The study emphasizes important role of the grain surface in observed room temperature ferromagnetism. It seems that the ferromagnetic phase is correlated with oxygen build up at the surface.
T2  - Acta Physica Polonica A
T1  - Room-Temperature Ferromagnetism in Zn-Mn-O, X-Ray Photoemission Surface Study
VL  - 120
IS  - 2
SP  - 311
EP  - 315
DO  - 10.12693/APhysPolA.120.311
ER  - 

@article{
author = "Milivojević, Dušan and Babić-Stojić, Branka S. and Blanuša, Jovan and Kovač, Janez",
year = "2011",
abstract = "Room temperature ferromagnetic properties of Zn-Mn-O show evident dependence on manganese concentration and preparation conditions. We systematically studied series of samples with manganese concentration ranging from 0 to 10 at.%, prepared in air at thermal treatment temperatures ranging from 400 to 900 degrees tau C. The samples were investigated by X-ray diffraction, TEM, magnetization measurements and XPS spectroscopy. XPS analyses of surface composition, chemical bonding and XPS depth profiling were successfully employed on powder revealing the chemical composition at the surface of the grains and underneath. The study emphasizes important role of the grain surface in observed room temperature ferromagnetism. It seems that the ferromagnetic phase is correlated with oxygen build up at the surface.",
journal = "Acta Physica Polonica A",
title = "Room-Temperature Ferromagnetism in Zn-Mn-O, X-Ray Photoemission Surface Study",
volume = "120",
number = "2",
pages = "311-315",
doi = "10.12693/APhysPolA.120.311"
}

Milivojević, D., Babić-Stojić, B. S., Blanuša, J.,& Kovač, J.. (2011). Room-Temperature Ferromagnetism in Zn-Mn-O, X-Ray Photoemission Surface Study. in Acta Physica Polonica A, 120(2), 311-315.
https://doi.org/10.12693/APhysPolA.120.311

Milivojević D, Babić-Stojić BS, Blanuša J, Kovač J. Room-Temperature Ferromagnetism in Zn-Mn-O, X-Ray Photoemission Surface Study. in Acta Physica Polonica A. 2011;120(2):311-315.
doi:10.12693/APhysPolA.120.311 .

Milivojević, Dušan, Babić-Stojić, Branka S., Blanuša, Jovan, Kovač, Janez, "Room-Temperature Ferromagnetism in Zn-Mn-O, X-Ray Photoemission Surface Study" in Acta Physica Polonica A, 120, no. 2 (2011):311-315,
https://doi.org/10.12693/APhysPolA.120.311 . .

TY  - JOUR
AU  - Spasojević, Vojislav
AU  - Mraković, Ana Đ.
AU  - Perović, Marija M.
AU  - Kusigerski, Vladan
AU  - Blanuša, Jovan
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4232
AB  - Single-phase perovskite compound La0.7Ca0.3MnO3 was synthesised by a high-energy ball milling in a single step processing. Structure and morphology characterizations revealed nanoparticle nature of this mixed valent manganite with the average particle diameter of 9 nm. Comprehensive set of magnetic measurements showed that the system can be described as an ensemble of interacting magnetic nanoparticles where each particle possesses high magnetic moment, i.e., superspin. Furthermore, magnetic behavior showed contributions from both superspin-glass (SSG) and superparamagnetic (SP) states, and the prevailing properties depended on the experimental conditions. It was established that SSG state dominated in low magnetic fields up to 500 Oe while in higher applied fields suppression of collective behavior occurred and individual characteristics of nanoparticles prevailed. It was also concluded that the applied method of synthesis produced system with high magnetic anisotropy as well as with the large nanoparticle shell whose thickness amounts 30% of a particle diameter.
T2  - Journal of Nanoparticle Research
T1  - Superspin-glass like behavior of nanoparticle La0.7Ca0.3MnO3 obtained by mechanochemical milling
VL  - 13
IS  - 2
SP  - 763
EP  - 771
DO  - 10.1007/s11051-010-0076-2
ER  - 

@article{
author = "Spasojević, Vojislav and Mraković, Ana Đ. and Perović, Marija M. and Kusigerski, Vladan and Blanuša, Jovan",
year = "2011",
abstract = "Single-phase perovskite compound La0.7Ca0.3MnO3 was synthesised by a high-energy ball milling in a single step processing. Structure and morphology characterizations revealed nanoparticle nature of this mixed valent manganite with the average particle diameter of 9 nm. Comprehensive set of magnetic measurements showed that the system can be described as an ensemble of interacting magnetic nanoparticles where each particle possesses high magnetic moment, i.e., superspin. Furthermore, magnetic behavior showed contributions from both superspin-glass (SSG) and superparamagnetic (SP) states, and the prevailing properties depended on the experimental conditions. It was established that SSG state dominated in low magnetic fields up to 500 Oe while in higher applied fields suppression of collective behavior occurred and individual characteristics of nanoparticles prevailed. It was also concluded that the applied method of synthesis produced system with high magnetic anisotropy as well as with the large nanoparticle shell whose thickness amounts 30% of a particle diameter.",
journal = "Journal of Nanoparticle Research",
title = "Superspin-glass like behavior of nanoparticle La0.7Ca0.3MnO3 obtained by mechanochemical milling",
volume = "13",
number = "2",
pages = "763-771",
doi = "10.1007/s11051-010-0076-2"
}

Spasojević, V., Mraković, A. Đ., Perović, M. M., Kusigerski, V.,& Blanuša, J.. (2011). Superspin-glass like behavior of nanoparticle La0.7Ca0.3MnO3 obtained by mechanochemical milling. in Journal of Nanoparticle Research, 13(2), 763-771.
https://doi.org/10.1007/s11051-010-0076-2

Spasojević V, Mraković AĐ, Perović MM, Kusigerski V, Blanuša J. Superspin-glass like behavior of nanoparticle La0.7Ca0.3MnO3 obtained by mechanochemical milling. in Journal of Nanoparticle Research. 2011;13(2):763-771.
doi:10.1007/s11051-010-0076-2 .

Spasojević, Vojislav, Mraković, Ana Đ., Perović, Marija M., Kusigerski, Vladan, Blanuša, Jovan, "Superspin-glass like behavior of nanoparticle La0.7Ca0.3MnO3 obtained by mechanochemical milling" in Journal of Nanoparticle Research, 13, no. 2 (2011):763-771,
https://doi.org/10.1007/s11051-010-0076-2 . .

TY  - JOUR
AU  - Perović, Marija M.
AU  - Mraković, Ana Đ.
AU  - Kusigerski, Vladan
AU  - Blanuša, Jovan
AU  - Spasojević, Vojislav
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4607
AB  - Spin dynamics in mechanochemically obtained nanoparticle manganite La0.70Ca0.30MnO3 was investigated in this study by means of a series of AC and DC magnetic measurements. AC susceptibility indicates the presence of sizeable interparticle interactions, yielding collective magnetic behavior. The related properties were probed by experiments in weak DC field: memory effects were analyzed in both field-cooled (FC) and zero field-cooled (ZFC) regimes, while, after ZFC aging, magnetic relaxation was recorded. The system appears to be sensitive to magnetothermal history, in analogy with spin-glass-like compounds. The analysis of the data indicates the occurrence of slow dynamics in an ensemble of strongly interacting super spins.
T2  - Journal of Nanoparticle Research
T1  - Spin-glass dynamics in interacting nanoparticle system La0.7Ca0.3MnO3 obtained by mechanochemical milling
VL  - 13
IS  - 12
SP  - 6805
EP  - 6811
DO  - 10.1007/s11051-011-0588-4
ER  - 

@article{
author = "Perović, Marija M. and Mraković, Ana Đ. and Kusigerski, Vladan and Blanuša, Jovan and Spasojević, Vojislav",
year = "2011",
abstract = "Spin dynamics in mechanochemically obtained nanoparticle manganite La0.70Ca0.30MnO3 was investigated in this study by means of a series of AC and DC magnetic measurements. AC susceptibility indicates the presence of sizeable interparticle interactions, yielding collective magnetic behavior. The related properties were probed by experiments in weak DC field: memory effects were analyzed in both field-cooled (FC) and zero field-cooled (ZFC) regimes, while, after ZFC aging, magnetic relaxation was recorded. The system appears to be sensitive to magnetothermal history, in analogy with spin-glass-like compounds. The analysis of the data indicates the occurrence of slow dynamics in an ensemble of strongly interacting super spins.",
journal = "Journal of Nanoparticle Research",
title = "Spin-glass dynamics in interacting nanoparticle system La0.7Ca0.3MnO3 obtained by mechanochemical milling",
volume = "13",
number = "12",
pages = "6805-6811",
doi = "10.1007/s11051-011-0588-4"
}

Perović, M. M., Mraković, A. Đ., Kusigerski, V., Blanuša, J.,& Spasojević, V.. (2011). Spin-glass dynamics in interacting nanoparticle system La0.7Ca0.3MnO3 obtained by mechanochemical milling. in Journal of Nanoparticle Research, 13(12), 6805-6811.
https://doi.org/10.1007/s11051-011-0588-4

Perović MM, Mraković AĐ, Kusigerski V, Blanuša J, Spasojević V. Spin-glass dynamics in interacting nanoparticle system La0.7Ca0.3MnO3 obtained by mechanochemical milling. in Journal of Nanoparticle Research. 2011;13(12):6805-6811.
doi:10.1007/s11051-011-0588-4 .

Perović, Marija M., Mraković, Ana Đ., Kusigerski, Vladan, Blanuša, Jovan, Spasojević, Vojislav, "Spin-glass dynamics in interacting nanoparticle system La0.7Ca0.3MnO3 obtained by mechanochemical milling" in Journal of Nanoparticle Research, 13, no. 12 (2011):6805-6811,
https://doi.org/10.1007/s11051-011-0588-4 . .