TY  - JOUR
AU  - Tadić, Marin
AU  - Milošević, Irena
AU  - Kralj, Slavko
AU  - Hanžel, Darko
AU  - Barudžija, Tanja
AU  - Motte, Laurence
AU  - Makovec, Darko
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8824
AB  - A metastable ε-polymorph of iron(III) oxide (ε-Fe2O3) is a very attractive material from the technological, engineering, and scientific points of view. In comparison with other iron oxides, it is characterized by unusual magnetic properties and a giant coercivity of ~20 kOe, which is the largest value among metal oxides. The routine method of ε-Fe2O3 formation is based on the thermal annealing of maghemite (γ-Fe2O3) nanoparticles confined in a silica matrix where the ε-Fe2O3 appears as an intermediate phase between the maghemite and an α-polymorph (α-Fe2O3) hematite (γ→ε→α pathway). In this study, it is demonstrated that the ε→α transformation can be reversed when hematite nanoparticles with an anisotropic hollow morphology are annealed above 600 °C. The observed reversal of the phase stability is explained in terms of an increased nanoparticle surface area and surface energy related to the hollow structure. This study demonstrates the applicability of surface-induced phase transformation to stabilize and control ε-Fe2O3 nanostructures with anisotropic shape and high coercivity ~1600 kA/m that is one of the key properties of functional magnetic materials for information processing and storage. The understanding of ε-Fe2O3 formation mechanism can provide a new viewpoint and guidance for designing metastable polymorphs and applicative properties. © 2020 Acta Materialia Inc.
T2  - Acta Materialia
T1  - Surface-induced reversal of a phase transformation for the synthesis of ε-Fe2O3 nanoparticles with high coercivity
VL  - 188
SP  - 16
EP  - 22
DO  - 10.1016/j.actamat.2020.01.058
ER  - 

@article{
author = "Tadić, Marin and Milošević, Irena and Kralj, Slavko and Hanžel, Darko and Barudžija, Tanja and Motte, Laurence and Makovec, Darko",
year = "2020",
abstract = "A metastable ε-polymorph of iron(III) oxide (ε-Fe2O3) is a very attractive material from the technological, engineering, and scientific points of view. In comparison with other iron oxides, it is characterized by unusual magnetic properties and a giant coercivity of ~20 kOe, which is the largest value among metal oxides. The routine method of ε-Fe2O3 formation is based on the thermal annealing of maghemite (γ-Fe2O3) nanoparticles confined in a silica matrix where the ε-Fe2O3 appears as an intermediate phase between the maghemite and an α-polymorph (α-Fe2O3) hematite (γ→ε→α pathway). In this study, it is demonstrated that the ε→α transformation can be reversed when hematite nanoparticles with an anisotropic hollow morphology are annealed above 600 °C. The observed reversal of the phase stability is explained in terms of an increased nanoparticle surface area and surface energy related to the hollow structure. This study demonstrates the applicability of surface-induced phase transformation to stabilize and control ε-Fe2O3 nanostructures with anisotropic shape and high coercivity ~1600 kA/m that is one of the key properties of functional magnetic materials for information processing and storage. The understanding of ε-Fe2O3 formation mechanism can provide a new viewpoint and guidance for designing metastable polymorphs and applicative properties. © 2020 Acta Materialia Inc.",
journal = "Acta Materialia",
title = "Surface-induced reversal of a phase transformation for the synthesis of ε-Fe2O3 nanoparticles with high coercivity",
volume = "188",
pages = "16-22",
doi = "10.1016/j.actamat.2020.01.058"
}

Tadić, M., Milošević, I., Kralj, S., Hanžel, D., Barudžija, T., Motte, L.,& Makovec, D.. (2020). Surface-induced reversal of a phase transformation for the synthesis of ε-Fe2O3 nanoparticles with high coercivity. in Acta Materialia, 188, 16-22.
https://doi.org/10.1016/j.actamat.2020.01.058

Tadić M, Milošević I, Kralj S, Hanžel D, Barudžija T, Motte L, Makovec D. Surface-induced reversal of a phase transformation for the synthesis of ε-Fe2O3 nanoparticles with high coercivity. in Acta Materialia. 2020;188:16-22.
doi:10.1016/j.actamat.2020.01.058 .

Tadić, Marin, Milošević, Irena, Kralj, Slavko, Hanžel, Darko, Barudžija, Tanja, Motte, Laurence, Makovec, Darko, "Surface-induced reversal of a phase transformation for the synthesis of ε-Fe2O3 nanoparticles with high coercivity" in Acta Materialia, 188 (2020):16-22,
https://doi.org/10.1016/j.actamat.2020.01.058 . .

TY  - JOUR
AU  - Babić-Stojić, Branka S.
AU  - Jokanović, Vukoman R.
AU  - Milivojević, Dušan
AU  - Pozek, Miroslav
AU  - Jagličić, Zvonko
AU  - Makovec, Darko
AU  - Jović Orsini, Nataša
AU  - Marković, Mirjana
AU  - Arsikin, Katarina M.
AU  - Paunović, Verica G.
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1889
AB  - Ultrasmall iron oxide (USPIO) nanoparticles, with diameter mostly less than 3 nm dispersed in an organic carrier fluid were synthesized by polyol route. The evolution of ZFC-FC magnetization curves with temperature, as well as the shift of the ac susceptibility peaks upon changing the frequency, reveal that the nanoparticles in the fluid are non-interacting and superparamagnetic with the blocking temperature T-B similar to 10 K. The Mossbauer spectra analysis proposed the core/shell structure of the nanoparticles consisting of stoichiometric gamma-Fe2O3 core and non-stoichiometric shell. The nanoparticle surface layer has a great influence on their properties which is principally manifested in significant reduction of the magnetization and in a large increase in magnetic anisotropy. Magnetic moments do not saturate in fields up to 5 T, even at the lowest measured temperature, T = 5 K. The average magnetic particle diameter is changed from 1.3 to 1.8 nm with increasing magnetic field from 0 to 5 T which is noticeably smaller than the particle sizes measured by TEM. The estimated effective magnetic anisotropy constant value, K-eff = 2 x 10(5) J/m(3), is two orders of magnitude higher than in the bulk maghemite. Measurements of the longitudinal and transverse NMR relaxivity parameters on water diluted nanoparticle dispersions at 1.5 T gave the values r(1) = 0.028 mmol(-1) s(-1), r(2) = 0.050 mmol(-1) s(-1) and their ratio r(2)/r(1) = 1.8. Continuous increase of the T-1-weighted MRI signal intensity with increasing Fe concentration in the nanoparticle dispersions was observed which makes this ferrofluid to behave as a positive T-1 contrast agent. (C) 2017 Elsevier B.V. All rights reserved.
T2  - Current Applied Physics
T1  - Ultrasmall iron oxide nanoparticles: Magnetic and NMR relaxometric properties
VL  - 18
IS  - 2
SP  - 141
EP  - 149
DO  - 10.1016/j.cap.2017.11.017
ER  - 

@article{
author = "Babić-Stojić, Branka S. and Jokanović, Vukoman R. and Milivojević, Dušan and Pozek, Miroslav and Jagličić, Zvonko and Makovec, Darko and Jović Orsini, Nataša and Marković, Mirjana and Arsikin, Katarina M. and Paunović, Verica G.",
year = "2018",
abstract = "Ultrasmall iron oxide (USPIO) nanoparticles, with diameter mostly less than 3 nm dispersed in an organic carrier fluid were synthesized by polyol route. The evolution of ZFC-FC magnetization curves with temperature, as well as the shift of the ac susceptibility peaks upon changing the frequency, reveal that the nanoparticles in the fluid are non-interacting and superparamagnetic with the blocking temperature T-B similar to 10 K. The Mossbauer spectra analysis proposed the core/shell structure of the nanoparticles consisting of stoichiometric gamma-Fe2O3 core and non-stoichiometric shell. The nanoparticle surface layer has a great influence on their properties which is principally manifested in significant reduction of the magnetization and in a large increase in magnetic anisotropy. Magnetic moments do not saturate in fields up to 5 T, even at the lowest measured temperature, T = 5 K. The average magnetic particle diameter is changed from 1.3 to 1.8 nm with increasing magnetic field from 0 to 5 T which is noticeably smaller than the particle sizes measured by TEM. The estimated effective magnetic anisotropy constant value, K-eff = 2 x 10(5) J/m(3), is two orders of magnitude higher than in the bulk maghemite. Measurements of the longitudinal and transverse NMR relaxivity parameters on water diluted nanoparticle dispersions at 1.5 T gave the values r(1) = 0.028 mmol(-1) s(-1), r(2) = 0.050 mmol(-1) s(-1) and their ratio r(2)/r(1) = 1.8. Continuous increase of the T-1-weighted MRI signal intensity with increasing Fe concentration in the nanoparticle dispersions was observed which makes this ferrofluid to behave as a positive T-1 contrast agent. (C) 2017 Elsevier B.V. All rights reserved.",
journal = "Current Applied Physics",
title = "Ultrasmall iron oxide nanoparticles: Magnetic and NMR relaxometric properties",
volume = "18",
number = "2",
pages = "141-149",
doi = "10.1016/j.cap.2017.11.017"
}

Babić-Stojić, B. S., Jokanović, V. R., Milivojević, D., Pozek, M., Jagličić, Z., Makovec, D., Jović Orsini, N., Marković, M., Arsikin, K. M.,& Paunović, V. G.. (2018). Ultrasmall iron oxide nanoparticles: Magnetic and NMR relaxometric properties. in Current Applied Physics, 18(2), 141-149.
https://doi.org/10.1016/j.cap.2017.11.017

Babić-Stojić BS, Jokanović VR, Milivojević D, Pozek M, Jagličić Z, Makovec D, Jović Orsini N, Marković M, Arsikin KM, Paunović VG. Ultrasmall iron oxide nanoparticles: Magnetic and NMR relaxometric properties. in Current Applied Physics. 2018;18(2):141-149.
doi:10.1016/j.cap.2017.11.017 .

Babić-Stojić, Branka S., Jokanović, Vukoman R., Milivojević, Dušan, Pozek, Miroslav, Jagličić, Zvonko, Makovec, Darko, Jović Orsini, Nataša, Marković, Mirjana, Arsikin, Katarina M., Paunović, Verica G., "Ultrasmall iron oxide nanoparticles: Magnetic and NMR relaxometric properties" in Current Applied Physics, 18, no. 2 (2018):141-149,
https://doi.org/10.1016/j.cap.2017.11.017 . .

TY  - JOUR
AU  - Tadić, Marin
AU  - Milošević, Irena
AU  - Kralj, Slavko
AU  - Mitrić, Miodrag
AU  - Makovec, Darko
AU  - Saboungi, Marie-Louise
AU  - Motte, Laurence
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1662
AB  - We present a simple preparation route to obtain a nanoscale meta-stable hard-magnetic epsilon-Fe2O3 phase, using silica coated beta-FeOOH nanorods as a precursor and an annealing process. The synthesized epsilon-Fe2O3 nanoparticles exhibit large coercivity (H-C similar to 20 kOe at 300 K and H-C similar to 1.6 kOe at 400 K), confirming their high potential for practical applications.
T2  - Nanoscale
T1  - Synthesis of metastable hard-magnetic epsilon-Fe2O3 nanoparticles from silica-coated akaganeite nanorods
VL  - 9
IS  - 30
SP  - 10579
EP  - 10584
DO  - 10.1039/c7nr03639f
ER  - 

@article{
author = "Tadić, Marin and Milošević, Irena and Kralj, Slavko and Mitrić, Miodrag and Makovec, Darko and Saboungi, Marie-Louise and Motte, Laurence",
year = "2017",
abstract = "We present a simple preparation route to obtain a nanoscale meta-stable hard-magnetic epsilon-Fe2O3 phase, using silica coated beta-FeOOH nanorods as a precursor and an annealing process. The synthesized epsilon-Fe2O3 nanoparticles exhibit large coercivity (H-C similar to 20 kOe at 300 K and H-C similar to 1.6 kOe at 400 K), confirming their high potential for practical applications.",
journal = "Nanoscale",
title = "Synthesis of metastable hard-magnetic epsilon-Fe2O3 nanoparticles from silica-coated akaganeite nanorods",
volume = "9",
number = "30",
pages = "10579-10584",
doi = "10.1039/c7nr03639f"
}

Tadić, M., Milošević, I., Kralj, S., Mitrić, M., Makovec, D., Saboungi, M.,& Motte, L.. (2017). Synthesis of metastable hard-magnetic epsilon-Fe2O3 nanoparticles from silica-coated akaganeite nanorods. in Nanoscale, 9(30), 10579-10584.
https://doi.org/10.1039/c7nr03639f

Tadić M, Milošević I, Kralj S, Mitrić M, Makovec D, Saboungi M, Motte L. Synthesis of metastable hard-magnetic epsilon-Fe2O3 nanoparticles from silica-coated akaganeite nanorods. in Nanoscale. 2017;9(30):10579-10584.
doi:10.1039/c7nr03639f .

Tadić, Marin, Milošević, Irena, Kralj, Slavko, Mitrić, Miodrag, Makovec, Darko, Saboungi, Marie-Louise, Motte, Laurence, "Synthesis of metastable hard-magnetic epsilon-Fe2O3 nanoparticles from silica-coated akaganeite nanorods" in Nanoscale, 9, no. 30 (2017):10579-10584,
https://doi.org/10.1039/c7nr03639f . .

TY  - JOUR
AU  - Babić-Stojić, Branka S.
AU  - Jokanović, Vukoman R.
AU  - Milivojević, Dušan
AU  - Pozek, Miroslav
AU  - Jagličić, Zvonko
AU  - Makovec, Darko
AU  - Arsikin, Katarina M.
AU  - Paunović, Verica G.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/857
AB  - Gd2O3 nanoparticles of a few nm in size and their agglomerates dispersed in dextrose derived polymer template were synthesized by hydrothermal treatment. The produced nanosized material was investigated by TEM, FTIR spectroscopy, SQUID measurements and NMR relaxometry. Biological evaluation of this material was done by crystal violet and MTT assays to determine the cell viability. Longitudinal and transverse NMR relaxivities of water diluted Gd2O3 nanoparticle dispersions measured at the magnetic field of 1.5 T, estimated to be r(1)(Gd2O3)=9.6 s(-1) mM(-1) in the Gd concentration range 0.1-30 mM and r(2)(Gd2O3)=17.7 s(-1) mM(-1) in the lower concentration range 0.1-0.8 mM, are significantly higher than the corresponding relaxivities measured for the standard contrast agent r1 (Gd-DTPA)=4.1 s(-1) mM(-1) and r(2)(Gd-DTPA)= 5.1 s(-1) mM(-1). The ratio of the two relaxivities for Gd2O3 nanoparticles r(2)/r(1) = 1.8 is suitable for T-1-weighted imaging. Good MRI signal intensities of the water diluted Gd2O3 nanoparticle dispersions were recorded at lower Gd concentrations 0.2-0.8 mM. The Gd2O3 samples did not exert any significant cytotoxic effects at Gd concentrations of 0.2 mM and below. These properties of the produced Gd2O3 nanoparticles in hydrothermally modified dextrose make them promising for potential application in MRI for the design of a positive MRI contrast agent. (C) 2015 Elsevier B.V. All rights reserved.
T2  - Journal of Magnetism and Magnetic Materials
T1  - Gd2O3 nanoparticles stabilized by hydrothermally modified dextrose for positive contrast magnetic resonance imaging
VL  - 403
SP  - 118
EP  - 126
DO  - 10.1016/j.jmmm.2015.11.075
ER  - 

@article{
author = "Babić-Stojić, Branka S. and Jokanović, Vukoman R. and Milivojević, Dušan and Pozek, Miroslav and Jagličić, Zvonko and Makovec, Darko and Arsikin, Katarina M. and Paunović, Verica G.",
year = "2016",
abstract = "Gd2O3 nanoparticles of a few nm in size and their agglomerates dispersed in dextrose derived polymer template were synthesized by hydrothermal treatment. The produced nanosized material was investigated by TEM, FTIR spectroscopy, SQUID measurements and NMR relaxometry. Biological evaluation of this material was done by crystal violet and MTT assays to determine the cell viability. Longitudinal and transverse NMR relaxivities of water diluted Gd2O3 nanoparticle dispersions measured at the magnetic field of 1.5 T, estimated to be r(1)(Gd2O3)=9.6 s(-1) mM(-1) in the Gd concentration range 0.1-30 mM and r(2)(Gd2O3)=17.7 s(-1) mM(-1) in the lower concentration range 0.1-0.8 mM, are significantly higher than the corresponding relaxivities measured for the standard contrast agent r1 (Gd-DTPA)=4.1 s(-1) mM(-1) and r(2)(Gd-DTPA)= 5.1 s(-1) mM(-1). The ratio of the two relaxivities for Gd2O3 nanoparticles r(2)/r(1) = 1.8 is suitable for T-1-weighted imaging. Good MRI signal intensities of the water diluted Gd2O3 nanoparticle dispersions were recorded at lower Gd concentrations 0.2-0.8 mM. The Gd2O3 samples did not exert any significant cytotoxic effects at Gd concentrations of 0.2 mM and below. These properties of the produced Gd2O3 nanoparticles in hydrothermally modified dextrose make them promising for potential application in MRI for the design of a positive MRI contrast agent. (C) 2015 Elsevier B.V. All rights reserved.",
journal = "Journal of Magnetism and Magnetic Materials",
title = "Gd2O3 nanoparticles stabilized by hydrothermally modified dextrose for positive contrast magnetic resonance imaging",
volume = "403",
pages = "118-126",
doi = "10.1016/j.jmmm.2015.11.075"
}

Babić-Stojić, B. S., Jokanović, V. R., Milivojević, D., Pozek, M., Jagličić, Z., Makovec, D., Arsikin, K. M.,& Paunović, V. G.. (2016). Gd2O3 nanoparticles stabilized by hydrothermally modified dextrose for positive contrast magnetic resonance imaging. in Journal of Magnetism and Magnetic Materials, 403, 118-126.
https://doi.org/10.1016/j.jmmm.2015.11.075

Babić-Stojić BS, Jokanović VR, Milivojević D, Pozek M, Jagličić Z, Makovec D, Arsikin KM, Paunović VG. Gd2O3 nanoparticles stabilized by hydrothermally modified dextrose for positive contrast magnetic resonance imaging. in Journal of Magnetism and Magnetic Materials. 2016;403:118-126.
doi:10.1016/j.jmmm.2015.11.075 .

Babić-Stojić, Branka S., Jokanović, Vukoman R., Milivojević, Dušan, Pozek, Miroslav, Jagličić, Zvonko, Makovec, Darko, Arsikin, Katarina M., Paunović, Verica G., "Gd2O3 nanoparticles stabilized by hydrothermally modified dextrose for positive contrast magnetic resonance imaging" in Journal of Magnetism and Magnetic Materials, 403 (2016):118-126,
https://doi.org/10.1016/j.jmmm.2015.11.075 . .

TY  - JOUR
AU  - Milivojević, Dušan
AU  - Babić-Stojić, Branka S.
AU  - Jokanović, Vukoman R.
AU  - Jagličić, Zvonko
AU  - Makovec, Darko
AU  - Jović, Nataša G.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5912
AB  - The work presents structural and magnetic properties of ultrasmall magnetic nanoparticles consisting of inorganic iron oxide core and organic ester shell, dispersed in an organic fluid, synthesized via polyol route. The structure analysis shows that nanoparticles are crystalline, less than 3 nm in size, mutually clearly separated. The magnetic properties are in accordance with the size of the nanoparticles and do not indicate interparticle interactions. The particles show pure superparamagnetic behavior with very low blocking temperature. ZFCFC bifurcation and ac susceptibility peaks are at temperatures T-B LT 12 K. The properties of fluid were compared with dried powder sample. Drying of fluid brings about interactions between the magnetic nanoparticles that considerably affect spin dynamics of the particles. The surface of nanoparticles has a significant influence on their behavior. The Mssbauer parameters indicate existence of gamma-Fe2O3 core and non-stoichiometric surface layer. Magnetic field dependent magnetization analysis suggests smaller apparent size of the particles d(0) = 0.56 nm. High magnetic anisotropy due to surface layer anisotropy was measured to be of the order 10(6) erg/cm(3) that is two orders of magnitude higher than that in bulk material. (C) 2014 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Magnetic properties of ultrasmall iron-oxide nanoparticles
VL  - 595
SP  - 153
EP  - 157
DO  - 10.1016/j.jallcom.2014.01.112
ER  - 

@article{
author = "Milivojević, Dušan and Babić-Stojić, Branka S. and Jokanović, Vukoman R. and Jagličić, Zvonko and Makovec, Darko and Jović, Nataša G.",
year = "2014",
abstract = "The work presents structural and magnetic properties of ultrasmall magnetic nanoparticles consisting of inorganic iron oxide core and organic ester shell, dispersed in an organic fluid, synthesized via polyol route. The structure analysis shows that nanoparticles are crystalline, less than 3 nm in size, mutually clearly separated. The magnetic properties are in accordance with the size of the nanoparticles and do not indicate interparticle interactions. The particles show pure superparamagnetic behavior with very low blocking temperature. ZFCFC bifurcation and ac susceptibility peaks are at temperatures T-B LT 12 K. The properties of fluid were compared with dried powder sample. Drying of fluid brings about interactions between the magnetic nanoparticles that considerably affect spin dynamics of the particles. The surface of nanoparticles has a significant influence on their behavior. The Mssbauer parameters indicate existence of gamma-Fe2O3 core and non-stoichiometric surface layer. Magnetic field dependent magnetization analysis suggests smaller apparent size of the particles d(0) = 0.56 nm. High magnetic anisotropy due to surface layer anisotropy was measured to be of the order 10(6) erg/cm(3) that is two orders of magnitude higher than that in bulk material. (C) 2014 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Magnetic properties of ultrasmall iron-oxide nanoparticles",
volume = "595",
pages = "153-157",
doi = "10.1016/j.jallcom.2014.01.112"
}

Milivojević, D., Babić-Stojić, B. S., Jokanović, V. R., Jagličić, Z., Makovec, D.,& Jović, N. G.. (2014). Magnetic properties of ultrasmall iron-oxide nanoparticles. in Journal of Alloys and Compounds, 595, 153-157.
https://doi.org/10.1016/j.jallcom.2014.01.112

Milivojević D, Babić-Stojić BS, Jokanović VR, Jagličić Z, Makovec D, Jović NG. Magnetic properties of ultrasmall iron-oxide nanoparticles. in Journal of Alloys and Compounds. 2014;595:153-157.
doi:10.1016/j.jallcom.2014.01.112 .

Milivojević, Dušan, Babić-Stojić, Branka S., Jokanović, Vukoman R., Jagličić, Zvonko, Makovec, Darko, Jović, Nataša G., "Magnetic properties of ultrasmall iron-oxide nanoparticles" in Journal of Alloys and Compounds, 595 (2014):153-157,
https://doi.org/10.1016/j.jallcom.2014.01.112 . .

TY  - JOUR
AU  - Tadić, Marin
AU  - Kralj, Slavko
AU  - Jagodič, Marko
AU  - Hanžel, Darko
AU  - Makovec, Darko
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/59
AB  - The aim of this work is to present the magnetic properties of novel superparamagnetic-iNANOvative (TM)vertical bar silica nanoparticle clusters. A TEM analysis showed that these nanoparticle clusters, approximately 80 nm in size, contained an assembly of maghemite nanoparticles in the core and an amorphous silica shell. The maghemite nanoparticles in the core were approximately 10 nm in size, whereas the uniform silica shell was approximately 15-nm thick. The number of magnetic nanoparticles that were densely packed in the core of the single nanocluster was estimated to be approximately 67, resulting in a high magnetic moment for the single nanocluster of m(nc) similar to 1.2 x 10(6) mu(B). This magnetic property of the nanoparticle cluster is advantageous for its easy manipulation using an external magnetic field, for example, in biomedical applications, such as drug delivery, or for magnetic separation in biotechnology. The magnetic properties of the iNANOvative (TM)vertical bar silica nanoparticle clusters were systematically studied, with a special focus on the influence of the magnetic interactions between the nanoparticles in the core. For comparison, the nanoparticle clusters were annealed for 3 h at 300 degrees C in air. The annealing had no influence on the nanoparticles size and phase; however, it had a unique effect on the magnetic properties, i.e., a decrease of the blocking temperature and a weakening of the inter-particle interactions. We believe that this surprising observation is related to the thermal decomposition of the organic surfactant on the surfaces of the nanoparticles at the high annealing temperatures, which resulted in the formation of amorphous carbon inside the nanocluster. (C) 2014 Elsevier B.V. All rights reserved.
T2  - Applied Surface Science
T1  - Magnetic properties of novel superparamagnetic iron oxide nanoclusters and their peculiarity under annealing treatment
VL  - 322
SP  - 255
EP  - 264
DO  - 10.1016/j.apsusc.2014.09.181
ER  - 

@article{
author = "Tadić, Marin and Kralj, Slavko and Jagodič, Marko and Hanžel, Darko and Makovec, Darko",
year = "2014",
abstract = "The aim of this work is to present the magnetic properties of novel superparamagnetic-iNANOvative (TM)vertical bar silica nanoparticle clusters. A TEM analysis showed that these nanoparticle clusters, approximately 80 nm in size, contained an assembly of maghemite nanoparticles in the core and an amorphous silica shell. The maghemite nanoparticles in the core were approximately 10 nm in size, whereas the uniform silica shell was approximately 15-nm thick. The number of magnetic nanoparticles that were densely packed in the core of the single nanocluster was estimated to be approximately 67, resulting in a high magnetic moment for the single nanocluster of m(nc) similar to 1.2 x 10(6) mu(B). This magnetic property of the nanoparticle cluster is advantageous for its easy manipulation using an external magnetic field, for example, in biomedical applications, such as drug delivery, or for magnetic separation in biotechnology. The magnetic properties of the iNANOvative (TM)vertical bar silica nanoparticle clusters were systematically studied, with a special focus on the influence of the magnetic interactions between the nanoparticles in the core. For comparison, the nanoparticle clusters were annealed for 3 h at 300 degrees C in air. The annealing had no influence on the nanoparticles size and phase; however, it had a unique effect on the magnetic properties, i.e., a decrease of the blocking temperature and a weakening of the inter-particle interactions. We believe that this surprising observation is related to the thermal decomposition of the organic surfactant on the surfaces of the nanoparticles at the high annealing temperatures, which resulted in the formation of amorphous carbon inside the nanocluster. (C) 2014 Elsevier B.V. All rights reserved.",
journal = "Applied Surface Science",
title = "Magnetic properties of novel superparamagnetic iron oxide nanoclusters and their peculiarity under annealing treatment",
volume = "322",
pages = "255-264",
doi = "10.1016/j.apsusc.2014.09.181"
}

Tadić, M., Kralj, S., Jagodič, M., Hanžel, D.,& Makovec, D.. (2014). Magnetic properties of novel superparamagnetic iron oxide nanoclusters and their peculiarity under annealing treatment. in Applied Surface Science, 322, 255-264.
https://doi.org/10.1016/j.apsusc.2014.09.181

Tadić M, Kralj S, Jagodič M, Hanžel D, Makovec D. Magnetic properties of novel superparamagnetic iron oxide nanoclusters and their peculiarity under annealing treatment. in Applied Surface Science. 2014;322:255-264.
doi:10.1016/j.apsusc.2014.09.181 .

Tadić, Marin, Kralj, Slavko, Jagodič, Marko, Hanžel, Darko, Makovec, Darko, "Magnetic properties of novel superparamagnetic iron oxide nanoclusters and their peculiarity under annealing treatment" in Applied Surface Science, 322 (2014):255-264,
https://doi.org/10.1016/j.apsusc.2014.09.181 . .

TY  - JOUR
AU  - Babić-Stojić, Branka S.
AU  - Jokanović, Vukoman R.
AU  - Milivojević, Dušan
AU  - Pozek, Miroslav
AU  - Jagličić, Zvonko
AU  - Makovec, Darko
AU  - Arsikin, Katarina M.
AU  - Paunović, Verica G.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/414
AB  - Gd2O3 nanoparticles and their agglomerates from approximately 10 to 80 nm in size suspended in an organic liquid were synthesized via polyol route. The reaction between diethylene glycol and added acetic acid, which occurred simultaneously with the synthesis of Gd2O3 nanoparticles, was catalyzed by sodium bisulfate to transform as much as possible diethylene glycol in corresponding ester at the end of complete reaction. The produced nanosized material of gadolinium oxide was investigated by TEM, DLS, FTIR spectroscopy, and NMR relaxometry. Biological evaluation of this material was done by MTT and crystal violet assays to determine the cell viability. Longitudinal and transverse relaxivities of water-diluted Gd2O3 nanoparticle suspensions estimated to be r(1) = 13.6 and r(2) = 14.7 s(-1) mM(-1) are about three times higher compared to the relaxivities obtained for standard contrast agent Gd-DTPA (Magnevist). Good MRI signal intensities of the water-diluted Gd2O3 nanoparticle suspensions were recorded in the Gd concentration range 0.2-0.3 mM for which the suspensions were not toxic exhibiting simultaneously higher signal intensities than those for Magnevist in the Gd concentration range 0.4-1 mM for which this standard contrast agent was not toxic. These properties make the produced Gd2O3 nanoparticle material promising for potential application as MRI contrast agent.
T2  - Journal of Nanoparticle Research
T1  - NMR relaxometric properties and cytotoxicity of Gd2O3 nanoparticle suspensions in an organic liquid
VL  - 16
IS  - 10
DO  - 10.1007/s11051-014-2663-0
ER  - 

@article{
author = "Babić-Stojić, Branka S. and Jokanović, Vukoman R. and Milivojević, Dušan and Pozek, Miroslav and Jagličić, Zvonko and Makovec, Darko and Arsikin, Katarina M. and Paunović, Verica G.",
year = "2014",
abstract = "Gd2O3 nanoparticles and their agglomerates from approximately 10 to 80 nm in size suspended in an organic liquid were synthesized via polyol route. The reaction between diethylene glycol and added acetic acid, which occurred simultaneously with the synthesis of Gd2O3 nanoparticles, was catalyzed by sodium bisulfate to transform as much as possible diethylene glycol in corresponding ester at the end of complete reaction. The produced nanosized material of gadolinium oxide was investigated by TEM, DLS, FTIR spectroscopy, and NMR relaxometry. Biological evaluation of this material was done by MTT and crystal violet assays to determine the cell viability. Longitudinal and transverse relaxivities of water-diluted Gd2O3 nanoparticle suspensions estimated to be r(1) = 13.6 and r(2) = 14.7 s(-1) mM(-1) are about three times higher compared to the relaxivities obtained for standard contrast agent Gd-DTPA (Magnevist). Good MRI signal intensities of the water-diluted Gd2O3 nanoparticle suspensions were recorded in the Gd concentration range 0.2-0.3 mM for which the suspensions were not toxic exhibiting simultaneously higher signal intensities than those for Magnevist in the Gd concentration range 0.4-1 mM for which this standard contrast agent was not toxic. These properties make the produced Gd2O3 nanoparticle material promising for potential application as MRI contrast agent.",
journal = "Journal of Nanoparticle Research",
title = "NMR relaxometric properties and cytotoxicity of Gd2O3 nanoparticle suspensions in an organic liquid",
volume = "16",
number = "10",
doi = "10.1007/s11051-014-2663-0"
}

Babić-Stojić, B. S., Jokanović, V. R., Milivojević, D., Pozek, M., Jagličić, Z., Makovec, D., Arsikin, K. M.,& Paunović, V. G.. (2014). NMR relaxometric properties and cytotoxicity of Gd2O3 nanoparticle suspensions in an organic liquid. in Journal of Nanoparticle Research, 16(10).
https://doi.org/10.1007/s11051-014-2663-0

Babić-Stojić BS, Jokanović VR, Milivojević D, Pozek M, Jagličić Z, Makovec D, Arsikin KM, Paunović VG. NMR relaxometric properties and cytotoxicity of Gd2O3 nanoparticle suspensions in an organic liquid. in Journal of Nanoparticle Research. 2014;16(10).
doi:10.1007/s11051-014-2663-0 .

Babić-Stojić, Branka S., Jokanović, Vukoman R., Milivojević, Dušan, Pozek, Miroslav, Jagličić, Zvonko, Makovec, Darko, Arsikin, Katarina M., Paunović, Verica G., "NMR relaxometric properties and cytotoxicity of Gd2O3 nanoparticle suspensions in an organic liquid" in Journal of Nanoparticle Research, 16, no. 10 (2014),
https://doi.org/10.1007/s11051-014-2663-0 . .

TY  - JOUR
AU  - Babić-Stojić, Branka S.
AU  - Jokanović, Vukoman R.
AU  - Milivojević, Dušan
AU  - Jagličić, Zvonko
AU  - Makovec, Darko
AU  - Jović, Nataša G.
AU  - Marinović-Cincović, Milena
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5563
AB  - We present a study of dynamic magnetic properties of superparamagnetic CoFe2O4 nanoparticles of average size 5.9 nm suspended in an organic liquid. The relaxation times of the particle magnetic moments are found to be strongly dependent on the size of the particles, and also considerably dependent on interparticle interactions. Besides the lower frequency peak, an additional much faster relaxation is observed in the frequency dependence of the imaginary part of the ac magnetic susceptibility below the freezing point of the liquid. It is found that a large contribution to the magnetic relaxation of the lower frequency peak originates from the particles of dimensions 6.3-5.1 nm with interparticle interactions in the range 25-82 K, which correspond to nearer-neighbor particles. Much faster relaxation indicates that its significant part arises from the particles of dimensions 5.8-5.0 nm with interactions in the range 1-52 K which include also more distant neighbors. (C) 2013 AIP Publishing LLC.
T2  - Journal of Applied Physics
T1  - Magnetic properties and magnetic relaxation in a suspension of CoFe2O4 nanoparticles
VL  - 113
IS  - 23
DO  - 10.1063/1.4811537
ER  - 

@article{
author = "Babić-Stojić, Branka S. and Jokanović, Vukoman R. and Milivojević, Dušan and Jagličić, Zvonko and Makovec, Darko and Jović, Nataša G. and Marinović-Cincović, Milena",
year = "2013",
abstract = "We present a study of dynamic magnetic properties of superparamagnetic CoFe2O4 nanoparticles of average size 5.9 nm suspended in an organic liquid. The relaxation times of the particle magnetic moments are found to be strongly dependent on the size of the particles, and also considerably dependent on interparticle interactions. Besides the lower frequency peak, an additional much faster relaxation is observed in the frequency dependence of the imaginary part of the ac magnetic susceptibility below the freezing point of the liquid. It is found that a large contribution to the magnetic relaxation of the lower frequency peak originates from the particles of dimensions 6.3-5.1 nm with interparticle interactions in the range 25-82 K, which correspond to nearer-neighbor particles. Much faster relaxation indicates that its significant part arises from the particles of dimensions 5.8-5.0 nm with interactions in the range 1-52 K which include also more distant neighbors. (C) 2013 AIP Publishing LLC.",
journal = "Journal of Applied Physics",
title = "Magnetic properties and magnetic relaxation in a suspension of CoFe2O4 nanoparticles",
volume = "113",
number = "23",
doi = "10.1063/1.4811537"
}

Babić-Stojić, B. S., Jokanović, V. R., Milivojević, D., Jagličić, Z., Makovec, D., Jović, N. G.,& Marinović-Cincović, M.. (2013). Magnetic properties and magnetic relaxation in a suspension of CoFe2O4 nanoparticles. in Journal of Applied Physics, 113(23).
https://doi.org/10.1063/1.4811537

Babić-Stojić BS, Jokanović VR, Milivojević D, Jagličić Z, Makovec D, Jović NG, Marinović-Cincović M. Magnetic properties and magnetic relaxation in a suspension of CoFe2O4 nanoparticles. in Journal of Applied Physics. 2013;113(23).
doi:10.1063/1.4811537 .

Babić-Stojić, Branka S., Jokanović, Vukoman R., Milivojević, Dušan, Jagličić, Zvonko, Makovec, Darko, Jović, Nataša G., Marinović-Cincović, Milena, "Magnetic properties and magnetic relaxation in a suspension of CoFe2O4 nanoparticles" in Journal of Applied Physics, 113, no. 23 (2013),
https://doi.org/10.1063/1.4811537 . .

TY  - JOUR
AU  - Babić-Stojić, Branka S.
AU  - Jokanović, Vukoman R.
AU  - Milivojević, Dušan
AU  - Jagličić, Zvonko
AU  - Makovec, Darko
AU  - Jović, Nataša G.
AU  - Marinović-Cincović, Milena
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5773
AB  - We present a study of magnetic and structural properties of CoFe2O4 nanoparticles suspended in an organic liquid. Transmission electron microscopy shows that the nanoparticles have a narrow size distribution of average particle size 5.9 +/- 1.0 nm. X-ray diffraction shows that the particles are of cubic spinel crystal structure. Dynamic light scattering measurements reveal the existence of an organic shell around the CoFe2O4 nanoparticles with an average hydrodynamic diameter of 14.4 nm. Coercive magnetic field at T = 5 K is found to be 11.8 kOe. Disappearance of the coercive field and remanent magnetization at about 170 K suggests that the CoFe2O4 nanoparticles are superparamagnetic at higher temperatures which is confirmed by the room temperature Mossbauer spectrum analysis. Saturation magnetization of the nanoparticles of 80.8 emu/g(CoFe2O4) at 5 K reaches the value detected in the bulk material and remains very high also at room temperature. The cobalt ferrite nanoparticle system synthesized in this work exhibits magnetic properties which are very suitable for various biomedical applications.
T2  - Journal of Nanomaterials
T1  - Magnetic and Structural Studies of CoFe2O4 Nanoparticles Suspended in an Organic Liquid
SP  - 741036
DO  - 10.1155/2013/741036
ER  - 

@article{
author = "Babić-Stojić, Branka S. and Jokanović, Vukoman R. and Milivojević, Dušan and Jagličić, Zvonko and Makovec, Darko and Jović, Nataša G. and Marinović-Cincović, Milena",
year = "2013",
abstract = "We present a study of magnetic and structural properties of CoFe2O4 nanoparticles suspended in an organic liquid. Transmission electron microscopy shows that the nanoparticles have a narrow size distribution of average particle size 5.9 +/- 1.0 nm. X-ray diffraction shows that the particles are of cubic spinel crystal structure. Dynamic light scattering measurements reveal the existence of an organic shell around the CoFe2O4 nanoparticles with an average hydrodynamic diameter of 14.4 nm. Coercive magnetic field at T = 5 K is found to be 11.8 kOe. Disappearance of the coercive field and remanent magnetization at about 170 K suggests that the CoFe2O4 nanoparticles are superparamagnetic at higher temperatures which is confirmed by the room temperature Mossbauer spectrum analysis. Saturation magnetization of the nanoparticles of 80.8 emu/g(CoFe2O4) at 5 K reaches the value detected in the bulk material and remains very high also at room temperature. The cobalt ferrite nanoparticle system synthesized in this work exhibits magnetic properties which are very suitable for various biomedical applications.",
journal = "Journal of Nanomaterials",
title = "Magnetic and Structural Studies of CoFe2O4 Nanoparticles Suspended in an Organic Liquid",
pages = "741036",
doi = "10.1155/2013/741036"
}

Babić-Stojić, B. S., Jokanović, V. R., Milivojević, D., Jagličić, Z., Makovec, D., Jović, N. G.,& Marinović-Cincović, M.. (2013). Magnetic and Structural Studies of CoFe2O4 Nanoparticles Suspended in an Organic Liquid. in Journal of Nanomaterials, 741036.
https://doi.org/10.1155/2013/741036

Babić-Stojić BS, Jokanović VR, Milivojević D, Jagličić Z, Makovec D, Jović NG, Marinović-Cincović M. Magnetic and Structural Studies of CoFe2O4 Nanoparticles Suspended in an Organic Liquid. in Journal of Nanomaterials. 2013;:741036.
doi:10.1155/2013/741036 .

Babić-Stojić, Branka S., Jokanović, Vukoman R., Milivojević, Dušan, Jagličić, Zvonko, Makovec, Darko, Jović, Nataša G., Marinović-Cincović, Milena, "Magnetic and Structural Studies of CoFe2O4 Nanoparticles Suspended in an Organic Liquid" in Journal of Nanomaterials (2013):741036,
https://doi.org/10.1155/2013/741036 . .

TY  - JOUR
AU  - Jović, Nataša G.
AU  - Cvjetićanin, Nikola
AU  - Babić-Stojić, Branka S.
AU  - Makovec, Darko
AU  - Jokanović, Vukoman R.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5499
AB  - alpha-Fe2O3 nanospheres with diameters of 20-40 nm and FeOOH nanorods with diameters of 150-200 nm and lengths of 0.5-1.0 mu m were synthesized via hydrolysis of Fe(NO3)(3) and FeCl3 solutions, respectively, in the presence of urea and oleic acid, under reflux at temperature similar to 90 degrees C for 8 h. The molar ratio of Fe3+ ions and urea were changed until pure phases have been obtained. The key parameter of the synthesis which provides pure hematite and beta-FeOOH phases was the pH. The samples were characterized by X-ray powder diffraction, transmission electron microscopy and Mossbauer spectroscopy. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Synthesis of hematite and iron oxyhydroxide nanocrystals by precipitation of Fe3+ ions inside oleic acid micelles
VL  - 39
IS  - 5
SP  - 5659
EP  - 5665
DO  - 10.1016/j.ceramint.2012.12.082
ER  - 

@article{
author = "Jović, Nataša G. and Cvjetićanin, Nikola and Babić-Stojić, Branka S. and Makovec, Darko and Jokanović, Vukoman R.",
year = "2013",
abstract = "alpha-Fe2O3 nanospheres with diameters of 20-40 nm and FeOOH nanorods with diameters of 150-200 nm and lengths of 0.5-1.0 mu m were synthesized via hydrolysis of Fe(NO3)(3) and FeCl3 solutions, respectively, in the presence of urea and oleic acid, under reflux at temperature similar to 90 degrees C for 8 h. The molar ratio of Fe3+ ions and urea were changed until pure phases have been obtained. The key parameter of the synthesis which provides pure hematite and beta-FeOOH phases was the pH. The samples were characterized by X-ray powder diffraction, transmission electron microscopy and Mossbauer spectroscopy. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Synthesis of hematite and iron oxyhydroxide nanocrystals by precipitation of Fe3+ ions inside oleic acid micelles",
volume = "39",
number = "5",
pages = "5659-5665",
doi = "10.1016/j.ceramint.2012.12.082"
}

Jović, N. G., Cvjetićanin, N., Babić-Stojić, B. S., Makovec, D.,& Jokanović, V. R.. (2013). Synthesis of hematite and iron oxyhydroxide nanocrystals by precipitation of Fe3+ ions inside oleic acid micelles. in Ceramics International, 39(5), 5659-5665.
https://doi.org/10.1016/j.ceramint.2012.12.082

Jović NG, Cvjetićanin N, Babić-Stojić BS, Makovec D, Jokanović VR. Synthesis of hematite and iron oxyhydroxide nanocrystals by precipitation of Fe3+ ions inside oleic acid micelles. in Ceramics International. 2013;39(5):5659-5665.
doi:10.1016/j.ceramint.2012.12.082 .

Jović, Nataša G., Cvjetićanin, Nikola, Babić-Stojić, Branka S., Makovec, Darko, Jokanović, Vukoman R., "Synthesis of hematite and iron oxyhydroxide nanocrystals by precipitation of Fe3+ ions inside oleic acid micelles" in Ceramics International, 39, no. 5 (2013):5659-5665,
https://doi.org/10.1016/j.ceramint.2012.12.082 . .

TY  - JOUR
AU  - Milivojević, Dušan
AU  - Babić-Stojić, Branka S.
AU  - Jokanović, Vukoman R.
AU  - Jagličić, Zvonko
AU  - Makovec, Darko
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6924
AB  - Samples of Mn-doped amorphous SiO2 matrix with manganese concentration 0.7 and 3 at.% have been prepared by a sol-gel method. Transmission electron microscopy analysis has shown that the samples contain agglomerates of amorphous silica particles 10 - 20 nm in size. Two types of Mn-rich particles are dispersed in silica matrix, smaller nanoparticles with dimensions between 3 and 10 nm, and larger crystalline areas consisting of aggregates of the smaller nanoparticles. High-temperature magnetic susceptibility reveals that dominant magnetic phase at higher temperatures is lambda-MnO2. At temperatures below T-C = 43 K strong ferrimagnetism originating from the minor Mn3O4 phase masks the relatively weak magnetism of lambda-MnO2. Magnetic field dependence of the maximum in the zero-field-cooled magnetization for both the samples in the vicinity of 40 K, and a frequency shift of the real component of the AC magnetic susceptibility in the sample with 3 at.% Mn suggest that the magnetic moments of the smaller Mn3O4 nanoparticles with dimensions below 10 nm are subject to thermally activated blocking process just below the Curie temperature T-C. The low-temperature maximum in the zero-field-cooled magnetization observed for both the samples below 10 K indicates possible spin glass freezing of the magnetic moments in the geometrically frustrated Mn sublattice of the lambda-MnO2 crystal structure.
T2  - Acta Physica Polonica A
T1  - Magnetic Properties of Mn-Doped Amorphous SiO2 Matrix
VL  - 120
IS  - 2
SP  - 316
EP  - 321
DO  - 10.12693/APhysPolA.120.316
ER  - 

@article{
author = "Milivojević, Dušan and Babić-Stojić, Branka S. and Jokanović, Vukoman R. and Jagličić, Zvonko and Makovec, Darko",
year = "2011",
abstract = "Samples of Mn-doped amorphous SiO2 matrix with manganese concentration 0.7 and 3 at.% have been prepared by a sol-gel method. Transmission electron microscopy analysis has shown that the samples contain agglomerates of amorphous silica particles 10 - 20 nm in size. Two types of Mn-rich particles are dispersed in silica matrix, smaller nanoparticles with dimensions between 3 and 10 nm, and larger crystalline areas consisting of aggregates of the smaller nanoparticles. High-temperature magnetic susceptibility reveals that dominant magnetic phase at higher temperatures is lambda-MnO2. At temperatures below T-C = 43 K strong ferrimagnetism originating from the minor Mn3O4 phase masks the relatively weak magnetism of lambda-MnO2. Magnetic field dependence of the maximum in the zero-field-cooled magnetization for both the samples in the vicinity of 40 K, and a frequency shift of the real component of the AC magnetic susceptibility in the sample with 3 at.% Mn suggest that the magnetic moments of the smaller Mn3O4 nanoparticles with dimensions below 10 nm are subject to thermally activated blocking process just below the Curie temperature T-C. The low-temperature maximum in the zero-field-cooled magnetization observed for both the samples below 10 K indicates possible spin glass freezing of the magnetic moments in the geometrically frustrated Mn sublattice of the lambda-MnO2 crystal structure.",
journal = "Acta Physica Polonica A",
title = "Magnetic Properties of Mn-Doped Amorphous SiO2 Matrix",
volume = "120",
number = "2",
pages = "316-321",
doi = "10.12693/APhysPolA.120.316"
}

Milivojević, D., Babić-Stojić, B. S., Jokanović, V. R., Jagličić, Z.,& Makovec, D.. (2011). Magnetic Properties of Mn-Doped Amorphous SiO2 Matrix. in Acta Physica Polonica A, 120(2), 316-321.
https://doi.org/10.12693/APhysPolA.120.316

Milivojević D, Babić-Stojić BS, Jokanović VR, Jagličić Z, Makovec D. Magnetic Properties of Mn-Doped Amorphous SiO2 Matrix. in Acta Physica Polonica A. 2011;120(2):316-321.
doi:10.12693/APhysPolA.120.316 .

Milivojević, Dušan, Babić-Stojić, Branka S., Jokanović, Vukoman R., Jagličić, Zvonko, Makovec, Darko, "Magnetic Properties of Mn-Doped Amorphous SiO2 Matrix" in Acta Physica Polonica A, 120, no. 2 (2011):316-321,
https://doi.org/10.12693/APhysPolA.120.316 . .

TY  - JOUR
AU  - Milivojević, Dušan
AU  - Babić-Stojić, Branka S.
AU  - Jokanović, Vukoman R.
AU  - Jagličić, Zvonko
AU  - Makovec, Darko
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4177
AB  - Samples of Mn-oxide nanoparticles dispersed in an amorphous SiO2 matrix with manganese concentration 0.7 and 3 at% have been synthesized by a sol-gel method. Transmission electron microscopy analysis has shown that the samples contain agglomerates of amorphous silica particles 10-20 nm in size. Insilica matrix two types of Mn-rich particles are dispersed, smaller nanoparticles with dimensions between 3 and 10 nm, and larger crystalline areas consisting of aggregates of the smaller nanoparticles. High temperature magnetic susceptibility study reveals that dominant magnetic phase at higher temperatures is lambda-MnO2. At temperatures below T-C = 43 K strong ferrimagnetism originating from the minor Mn3O4 phase masks the relatively weak magnetism of lambda-MnO2 with antiferromagnetic interactions. Magnetic field dependence of the maximum in the zero-field-cooled magnetization for both the samples in the vicinity of 40 K, and a frequency shift of the real component of the ac magnetic susceptibility in the sample with 3 at% Mn suggest that the magnetic moments of the smaller Mn3O4 nanoparticles with dimensions below 10 nm are exposed to thermally activated blocking process just below the Curie temperature T-C. Appearance of a maximum in the zero-field-cooled magnetization for both the samples below 10 K indicates possible spin glass freezing of the magnetic moments at low temperatures which might occur in the geometrically frustrated Mn sublattice of the lambda-MnO2 crystal structure. (C) 2010 Elsevier B.V. All rights reserved.
T2  - Journal of Magnetism and Magnetic Materials
T1  - Magnetic properties of Mn-oxide nanoparticles dispersed in an amorphous SiO2 matrix
VL  - 323
IS  - 6
SP  - 805
EP  - 812
DO  - 10.1016/j.jmmm.2010.11.002
ER  - 

@article{
author = "Milivojević, Dušan and Babić-Stojić, Branka S. and Jokanović, Vukoman R. and Jagličić, Zvonko and Makovec, Darko",
year = "2011",
abstract = "Samples of Mn-oxide nanoparticles dispersed in an amorphous SiO2 matrix with manganese concentration 0.7 and 3 at% have been synthesized by a sol-gel method. Transmission electron microscopy analysis has shown that the samples contain agglomerates of amorphous silica particles 10-20 nm in size. Insilica matrix two types of Mn-rich particles are dispersed, smaller nanoparticles with dimensions between 3 and 10 nm, and larger crystalline areas consisting of aggregates of the smaller nanoparticles. High temperature magnetic susceptibility study reveals that dominant magnetic phase at higher temperatures is lambda-MnO2. At temperatures below T-C = 43 K strong ferrimagnetism originating from the minor Mn3O4 phase masks the relatively weak magnetism of lambda-MnO2 with antiferromagnetic interactions. Magnetic field dependence of the maximum in the zero-field-cooled magnetization for both the samples in the vicinity of 40 K, and a frequency shift of the real component of the ac magnetic susceptibility in the sample with 3 at% Mn suggest that the magnetic moments of the smaller Mn3O4 nanoparticles with dimensions below 10 nm are exposed to thermally activated blocking process just below the Curie temperature T-C. Appearance of a maximum in the zero-field-cooled magnetization for both the samples below 10 K indicates possible spin glass freezing of the magnetic moments at low temperatures which might occur in the geometrically frustrated Mn sublattice of the lambda-MnO2 crystal structure. (C) 2010 Elsevier B.V. All rights reserved.",
journal = "Journal of Magnetism and Magnetic Materials",
title = "Magnetic properties of Mn-oxide nanoparticles dispersed in an amorphous SiO2 matrix",
volume = "323",
number = "6",
pages = "805-812",
doi = "10.1016/j.jmmm.2010.11.002"
}

Milivojević, D., Babić-Stojić, B. S., Jokanović, V. R., Jagličić, Z.,& Makovec, D.. (2011). Magnetic properties of Mn-oxide nanoparticles dispersed in an amorphous SiO2 matrix. in Journal of Magnetism and Magnetic Materials, 323(6), 805-812.
https://doi.org/10.1016/j.jmmm.2010.11.002

Milivojević D, Babić-Stojić BS, Jokanović VR, Jagličić Z, Makovec D. Magnetic properties of Mn-oxide nanoparticles dispersed in an amorphous SiO2 matrix. in Journal of Magnetism and Magnetic Materials. 2011;323(6):805-812.
doi:10.1016/j.jmmm.2010.11.002 .

Milivojević, Dušan, Babić-Stojić, Branka S., Jokanović, Vukoman R., Jagličić, Zvonko, Makovec, Darko, "Magnetic properties of Mn-oxide nanoparticles dispersed in an amorphous SiO2 matrix" in Journal of Magnetism and Magnetic Materials, 323, no. 6 (2011):805-812,
https://doi.org/10.1016/j.jmmm.2010.11.002 . .

TY  - JOUR
AU  - Jović, Nataša G.
AU  - Jokanović, Vukoman R.
AU  - Jagličić, Zvonko
AU  - Branković, Dušan
AU  - Milosavljević, Momir
AU  - Makovec, Darko
AU  - Babić-Stojić, Branka S.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4081
AB  - Nanocomposite made of 10 wt% of Co2.4Al0.6O4 particles dispersed in an amorphous SiO2 matrix has been synthesized by a solgel method. X-ray diffraction, transmission electron microscopy and magnetic measurements have been used to characterize the properties of nanocomposite. Most of the particles are well crystallized and have an average diameter below 100 nm. Smaller particles with size below 10 nm have also been observed. A large value of the effective magnetic moment per Co2+ ion of 5.08 mu B and negative and the low CurieWeiss paramagnetic temperature Theta similar to -6 K, obtained from the high-temperature susceptibility data, indicate a possible mixing of Co2+ and Co3+ ions between tetrahedral and octahedral sites of the spinel crystal lattice. The measurements of static and dynamic magnetic susceptibilities have shown that Co2.4Al0.6O4 particles in SiO2 matrix display a spin glass behavior at low temperatures. (C) 2010 Elsevier B.V. All rights reserved.
T2  - Journal of Magnetism and Magnetic Materials
T1  - Magnetic properties of Co2.4Al0.6O4/SiO2 nanocomposite obtained via sol-gel method
VL  - 322
IS  - 21
SP  - 3271
EP  - 3277
DO  - 10.1016/j.jmmm.2010.06.006
ER  - 

@article{
author = "Jović, Nataša G. and Jokanović, Vukoman R. and Jagličić, Zvonko and Branković, Dušan and Milosavljević, Momir and Makovec, Darko and Babić-Stojić, Branka S.",
year = "2010",
abstract = "Nanocomposite made of 10 wt% of Co2.4Al0.6O4 particles dispersed in an amorphous SiO2 matrix has been synthesized by a solgel method. X-ray diffraction, transmission electron microscopy and magnetic measurements have been used to characterize the properties of nanocomposite. Most of the particles are well crystallized and have an average diameter below 100 nm. Smaller particles with size below 10 nm have also been observed. A large value of the effective magnetic moment per Co2+ ion of 5.08 mu B and negative and the low CurieWeiss paramagnetic temperature Theta similar to -6 K, obtained from the high-temperature susceptibility data, indicate a possible mixing of Co2+ and Co3+ ions between tetrahedral and octahedral sites of the spinel crystal lattice. The measurements of static and dynamic magnetic susceptibilities have shown that Co2.4Al0.6O4 particles in SiO2 matrix display a spin glass behavior at low temperatures. (C) 2010 Elsevier B.V. All rights reserved.",
journal = "Journal of Magnetism and Magnetic Materials",
title = "Magnetic properties of Co2.4Al0.6O4/SiO2 nanocomposite obtained via sol-gel method",
volume = "322",
number = "21",
pages = "3271-3277",
doi = "10.1016/j.jmmm.2010.06.006"
}

Jović, N. G., Jokanović, V. R., Jagličić, Z., Branković, D., Milosavljević, M., Makovec, D.,& Babić-Stojić, B. S.. (2010). Magnetic properties of Co2.4Al0.6O4/SiO2 nanocomposite obtained via sol-gel method. in Journal of Magnetism and Magnetic Materials, 322(21), 3271-3277.
https://doi.org/10.1016/j.jmmm.2010.06.006

Jović NG, Jokanović VR, Jagličić Z, Branković D, Milosavljević M, Makovec D, Babić-Stojić BS. Magnetic properties of Co2.4Al0.6O4/SiO2 nanocomposite obtained via sol-gel method. in Journal of Magnetism and Magnetic Materials. 2010;322(21):3271-3277.
doi:10.1016/j.jmmm.2010.06.006 .

Jović, Nataša G., Jokanović, Vukoman R., Jagličić, Zvonko, Branković, Dušan, Milosavljević, Momir, Makovec, Darko, Babić-Stojić, Branka S., "Magnetic properties of Co2.4Al0.6O4/SiO2 nanocomposite obtained via sol-gel method" in Journal of Magnetism and Magnetic Materials, 322, no. 21 (2010):3271-3277,
https://doi.org/10.1016/j.jmmm.2010.06.006 . .

TY  - JOUR
AU  - Marković, Jelena P.
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
AU  - Makovec, Darko
AU  - Milonjić, Slobodan K.
AU  - Uskoković, Dragan
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3329
AB  - The synthesis of nanostructured zirconia particles from aqueous colloidal dispersion of zirconia (zirconia sol) was carried out by ultrasonic spray pyrolysis method. The morphology of these nanostructured particles was characterized by scanning electron microscopy and transmission electron microscopy. The synthesized particles are spherical in shape with the avarage size of 400 nm, consisting of smaller primary particles, with the mean crystallite size of 7 nm. The tetragonal phase was confirmed by both X-ray and electron diffraction measurements.
T2  - Surface Review and Letters
T1  - Nanostructured ZrO2 powder synthesized by ultrasonic spray pyrolysis
VL  - 14
IS  - 5
SP  - 915
EP  - 919
DO  - 10.1142/S0218625X07010524
ER  - 

@article{
author = "Marković, Jelena P. and Jugović, Dragana and Mitrić, Miodrag and Makovec, Darko and Milonjić, Slobodan K. and Uskoković, Dragan",
year = "2007",
abstract = "The synthesis of nanostructured zirconia particles from aqueous colloidal dispersion of zirconia (zirconia sol) was carried out by ultrasonic spray pyrolysis method. The morphology of these nanostructured particles was characterized by scanning electron microscopy and transmission electron microscopy. The synthesized particles are spherical in shape with the avarage size of 400 nm, consisting of smaller primary particles, with the mean crystallite size of 7 nm. The tetragonal phase was confirmed by both X-ray and electron diffraction measurements.",
journal = "Surface Review and Letters",
title = "Nanostructured ZrO2 powder synthesized by ultrasonic spray pyrolysis",
volume = "14",
number = "5",
pages = "915-919",
doi = "10.1142/S0218625X07010524"
}

Marković, J. P., Jugović, D., Mitrić, M., Makovec, D., Milonjić, S. K.,& Uskoković, D.. (2007). Nanostructured ZrO2 powder synthesized by ultrasonic spray pyrolysis. in Surface Review and Letters, 14(5), 915-919.
https://doi.org/10.1142/S0218625X07010524

Marković JP, Jugović D, Mitrić M, Makovec D, Milonjić SK, Uskoković D. Nanostructured ZrO2 powder synthesized by ultrasonic spray pyrolysis. in Surface Review and Letters. 2007;14(5):915-919.
doi:10.1142/S0218625X07010524 .

Marković, Jelena P., Jugović, Dragana, Mitrić, Miodrag, Makovec, Darko, Milonjić, Slobodan K., Uskoković, Dragan, "Nanostructured ZrO2 powder synthesized by ultrasonic spray pyrolysis" in Surface Review and Letters, 14, no. 5 (2007):915-919,
https://doi.org/10.1142/S0218625X07010524 . .

TY  - JOUR
AU  - Jugović, Dragana
AU  - Cvjetićanin, Nikola
AU  - Kusigerski, Vladan
AU  - Mitrić, Miodrag
AU  - Miljkovic, M.
AU  - Makovec, Darko
AU  - Uskoković, Dragan
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3172
AB  - Quaternary spinel oxide LiMn1.825Cr0.175O4 Powder was synthesized by using an ultrasonic spray pyrolysis method, without additional annealing. The crystal structure of the as-prepared powder was revealed by X-ray powder diffraction and identified as a single spinel phase with Fd3m space group. The powders had a spherical morphology with extremely smooth surface appearance and densely congested interior structure. Transmission electron microscopy confirmed that the particle consisted by the cohesion of the primary particles. Magnetic measurements performed in DC field in both zero-field-cooled and field-cooled regimes, as well as AC susceptibility experiments, show that system undergoes spin-glass transition at the freezing temperature T-f = 20 K. The value of the effective magnetic moment mu(eff) = 4.34 mu(B) Obtained from the Curie-Weiss fit in the high temperature region confirms the substitution of Mn3+ ions with Cr3+ ions. (C) 2006 Elsevier Ltd. All rights reserved.
T2  - Materials Research Bulletin
T1  - Structural and magnetic characterization of LiMn1.825Cr0.175O4 spinel obtained by ultrasonic spray pyrolysis
VL  - 42
IS  - 3
SP  - 515
EP  - 522
DO  - 10.1016/j.materresbull.2006.06.018
ER  - 

@article{
author = "Jugović, Dragana and Cvjetićanin, Nikola and Kusigerski, Vladan and Mitrić, Miodrag and Miljkovic, M. and Makovec, Darko and Uskoković, Dragan",
year = "2007",
abstract = "Quaternary spinel oxide LiMn1.825Cr0.175O4 Powder was synthesized by using an ultrasonic spray pyrolysis method, without additional annealing. The crystal structure of the as-prepared powder was revealed by X-ray powder diffraction and identified as a single spinel phase with Fd3m space group. The powders had a spherical morphology with extremely smooth surface appearance and densely congested interior structure. Transmission electron microscopy confirmed that the particle consisted by the cohesion of the primary particles. Magnetic measurements performed in DC field in both zero-field-cooled and field-cooled regimes, as well as AC susceptibility experiments, show that system undergoes spin-glass transition at the freezing temperature T-f = 20 K. The value of the effective magnetic moment mu(eff) = 4.34 mu(B) Obtained from the Curie-Weiss fit in the high temperature region confirms the substitution of Mn3+ ions with Cr3+ ions. (C) 2006 Elsevier Ltd. All rights reserved.",
journal = "Materials Research Bulletin",
title = "Structural and magnetic characterization of LiMn1.825Cr0.175O4 spinel obtained by ultrasonic spray pyrolysis",
volume = "42",
number = "3",
pages = "515-522",
doi = "10.1016/j.materresbull.2006.06.018"
}

Jugović, D., Cvjetićanin, N., Kusigerski, V., Mitrić, M., Miljkovic, M., Makovec, D.,& Uskoković, D.. (2007). Structural and magnetic characterization of LiMn1.825Cr0.175O4 spinel obtained by ultrasonic spray pyrolysis. in Materials Research Bulletin, 42(3), 515-522.
https://doi.org/10.1016/j.materresbull.2006.06.018

Jugović D, Cvjetićanin N, Kusigerski V, Mitrić M, Miljkovic M, Makovec D, Uskoković D. Structural and magnetic characterization of LiMn1.825Cr0.175O4 spinel obtained by ultrasonic spray pyrolysis. in Materials Research Bulletin. 2007;42(3):515-522.
doi:10.1016/j.materresbull.2006.06.018 .

Jugović, Dragana, Cvjetićanin, Nikola, Kusigerski, Vladan, Mitrić, Miodrag, Miljkovic, M., Makovec, Darko, Uskoković, Dragan, "Structural and magnetic characterization of LiMn1.825Cr0.175O4 spinel obtained by ultrasonic spray pyrolysis" in Materials Research Bulletin, 42, no. 3 (2007):515-522,
https://doi.org/10.1016/j.materresbull.2006.06.018 . .

TY  - JOUR
AU  - Nikcevic, I.
AU  - Maravić, Dubravka S.
AU  - Ignjatović, Nenad L.
AU  - Mitrić, Miodrag
AU  - Makovec, Darko
AU  - Uskoković, Dragan
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3156
AB  - Biphasic calcium phosphate/poly-L-lactide granules of 150-200 mu m sizes were subjected to high-energy mechanical milling in a planetary ball mill for up to 480 minutes. Characterization of the material obtained was carried out using X-ray diffraction (XRD), differential scanning calorimetry (DSC), environmentally scanning electronic microscopy (ESEM), transmission electron microscopy (TEM) and infrared spectroscopy (IR). These techniques confirmed that mechanical milling induced significant changes in the biocomposite structure and properties. The most significant changes are reduction of the HAp crystallites size from 99.8 to 26.7 nm and beta-TCP from 97.3 to 29.6, as well as crystallinity of PLLA phases. Homogeneous phase distribution (arrangement) is obtained by extending the duration of mechanical milling.
T2  - Materials Transactions. JIM / Japan Institute of Metals
T1  - The formation and characterization of nanocrystalline phases by mechanical milling of biphasic calcium phosphate/poly-L-lactide biocomposite
VL  - 47
IS  - 12
SP  - 2980
EP  - 2986
DO  - 10.2320/matertrans.47.2980
ER  - 

@article{
author = "Nikcevic, I. and Maravić, Dubravka S. and Ignjatović, Nenad L. and Mitrić, Miodrag and Makovec, Darko and Uskoković, Dragan",
year = "2006",
abstract = "Biphasic calcium phosphate/poly-L-lactide granules of 150-200 mu m sizes were subjected to high-energy mechanical milling in a planetary ball mill for up to 480 minutes. Characterization of the material obtained was carried out using X-ray diffraction (XRD), differential scanning calorimetry (DSC), environmentally scanning electronic microscopy (ESEM), transmission electron microscopy (TEM) and infrared spectroscopy (IR). These techniques confirmed that mechanical milling induced significant changes in the biocomposite structure and properties. The most significant changes are reduction of the HAp crystallites size from 99.8 to 26.7 nm and beta-TCP from 97.3 to 29.6, as well as crystallinity of PLLA phases. Homogeneous phase distribution (arrangement) is obtained by extending the duration of mechanical milling.",
journal = "Materials Transactions. JIM / Japan Institute of Metals",
title = "The formation and characterization of nanocrystalline phases by mechanical milling of biphasic calcium phosphate/poly-L-lactide biocomposite",
volume = "47",
number = "12",
pages = "2980-2986",
doi = "10.2320/matertrans.47.2980"
}

Nikcevic, I., Maravić, D. S., Ignjatović, N. L., Mitrić, M., Makovec, D.,& Uskoković, D.. (2006). The formation and characterization of nanocrystalline phases by mechanical milling of biphasic calcium phosphate/poly-L-lactide biocomposite. in Materials Transactions. JIM / Japan Institute of Metals, 47(12), 2980-2986.
https://doi.org/10.2320/matertrans.47.2980

Nikcevic I, Maravić DS, Ignjatović NL, Mitrić M, Makovec D, Uskoković D. The formation and characterization of nanocrystalline phases by mechanical milling of biphasic calcium phosphate/poly-L-lactide biocomposite. in Materials Transactions. JIM / Japan Institute of Metals. 2006;47(12):2980-2986.
doi:10.2320/matertrans.47.2980 .

Nikcevic, I., Maravić, Dubravka S., Ignjatović, Nenad L., Mitrić, Miodrag, Makovec, Darko, Uskoković, Dragan, "The formation and characterization of nanocrystalline phases by mechanical milling of biphasic calcium phosphate/poly-L-lactide biocomposite" in Materials Transactions. JIM / Japan Institute of Metals, 47, no. 12 (2006):2980-2986,
https://doi.org/10.2320/matertrans.47.2980 . .

TY  - JOUR
AU  - Marković, Smilja
AU  - Pejovic, V
AU  - Mitrić, Miodrag
AU  - Cvjetićanin, Nikola
AU  - Makovec, Darko
AU  - Uskoković, Dragan
PY  - 2004
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6439
AB  - BaTi1-xSnxO3 (BTS) piezoceramics with multilayer structure were prepared. The Sn concentration in the layers was changed from x=0.025 to 0.15. Thick films were screen-printed on alumina substrates electroded with Ag/Pd. The BTS piezoceramics were sintered at 850degreesC for 10 minutes. The thickness was 45-150 mum depending on the number of layers. The microstructure of piezoceramic materials and the compatibility of BTS layers with substrates were investigated by SEM and EDX. The dielectric properties were measured and the results reported.
T2  - Materials Science Forum
T1  - Screen printed BaTi1-xSnxO3 multilayer materials
VL  - 453-454
SP  - 459
EP  - 464
DO  - 10.4028/www.scientific.net/MSF.453-454.459
ER  - 

@article{
author = "Marković, Smilja and Pejovic, V and Mitrić, Miodrag and Cvjetićanin, Nikola and Makovec, Darko and Uskoković, Dragan",
year = "2004",
abstract = "BaTi1-xSnxO3 (BTS) piezoceramics with multilayer structure were prepared. The Sn concentration in the layers was changed from x=0.025 to 0.15. Thick films were screen-printed on alumina substrates electroded with Ag/Pd. The BTS piezoceramics were sintered at 850degreesC for 10 minutes. The thickness was 45-150 mum depending on the number of layers. The microstructure of piezoceramic materials and the compatibility of BTS layers with substrates were investigated by SEM and EDX. The dielectric properties were measured and the results reported.",
journal = "Materials Science Forum",
title = "Screen printed BaTi1-xSnxO3 multilayer materials",
volume = "453-454",
pages = "459-464",
doi = "10.4028/www.scientific.net/MSF.453-454.459"
}

Marković, S., Pejovic, V., Mitrić, M., Cvjetićanin, N., Makovec, D.,& Uskoković, D.. (2004). Screen printed BaTi1-xSnxO3 multilayer materials. in Materials Science Forum, 453-454, 459-464.
https://doi.org/10.4028/www.scientific.net/MSF.453-454.459

Marković S, Pejovic V, Mitrić M, Cvjetićanin N, Makovec D, Uskoković D. Screen printed BaTi1-xSnxO3 multilayer materials. in Materials Science Forum. 2004;453-454:459-464.
doi:10.4028/www.scientific.net/MSF.453-454.459 .

Marković, Smilja, Pejovic, V, Mitrić, Miodrag, Cvjetićanin, Nikola, Makovec, Darko, Uskoković, Dragan, "Screen printed BaTi1-xSnxO3 multilayer materials" in Materials Science Forum, 453-454 (2004):459-464,
https://doi.org/10.4028/www.scientific.net/MSF.453-454.459 . .

TY  - JOUR
AU  - Nikcevic, I
AU  - Jokanović, Vukoman R.
AU  - Mitrić, Miodrag
AU  - Nedić, Zoran
AU  - Makovec, Darko
AU  - Uskoković, Dragan
PY  - 2004
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2778
AB  - Powder mixture of Ca(OH)(2)-P2O5-CaF2 were milled in planetary ball mill. A carbonated fluorhydroxyapatite, FHA Ca-10(PO4)(1-y)(CO3)(y)(PO4)(5)(OH)(2-2x1)(F)(2x1) was formed after 5 h of milling and carbonated fluoroapatite Ca-10(PO4)(1-y)(CO3)(y)(PO4)(5)(F)(2) was formed after 9 h of milling. Complete transformation of the carbonated form of FA into then single phase of FA occurred after 9 h milling and thermally treating. The various experimental techniques like X-ray Diffraction (XRD), Differential Thermal Analysis (DTA), Infrared Spectroscopy (IR), Transmission Electron Microscopy and Scanning Electron Microscopy (SEM) were used to characterize the synthesized powders and to postulate reaction mechanisms steps- transformations of reactants involved. (C) 2004 Elsevier Inc. All rights reserved.
T2  - Journal of Solid State Chemistry
T1  - Mechanochemical synthesis of nanostructured fluorapatite/fluorhydroxyapatite and carbonated fluorapatite/fluorhydroxyapatite
VL  - 177
IS  - 7
SP  - 2565
EP  - 2574
DO  - 10.1016/j.jssc.2004.03.024
ER  - 

@article{
author = "Nikcevic, I and Jokanović, Vukoman R. and Mitrić, Miodrag and Nedić, Zoran and Makovec, Darko and Uskoković, Dragan",
year = "2004",
abstract = "Powder mixture of Ca(OH)(2)-P2O5-CaF2 were milled in planetary ball mill. A carbonated fluorhydroxyapatite, FHA Ca-10(PO4)(1-y)(CO3)(y)(PO4)(5)(OH)(2-2x1)(F)(2x1) was formed after 5 h of milling and carbonated fluoroapatite Ca-10(PO4)(1-y)(CO3)(y)(PO4)(5)(F)(2) was formed after 9 h of milling. Complete transformation of the carbonated form of FA into then single phase of FA occurred after 9 h milling and thermally treating. The various experimental techniques like X-ray Diffraction (XRD), Differential Thermal Analysis (DTA), Infrared Spectroscopy (IR), Transmission Electron Microscopy and Scanning Electron Microscopy (SEM) were used to characterize the synthesized powders and to postulate reaction mechanisms steps- transformations of reactants involved. (C) 2004 Elsevier Inc. All rights reserved.",
journal = "Journal of Solid State Chemistry",
title = "Mechanochemical synthesis of nanostructured fluorapatite/fluorhydroxyapatite and carbonated fluorapatite/fluorhydroxyapatite",
volume = "177",
number = "7",
pages = "2565-2574",
doi = "10.1016/j.jssc.2004.03.024"
}

Nikcevic, I., Jokanović, V. R., Mitrić, M., Nedić, Z., Makovec, D.,& Uskoković, D.. (2004). Mechanochemical synthesis of nanostructured fluorapatite/fluorhydroxyapatite and carbonated fluorapatite/fluorhydroxyapatite. in Journal of Solid State Chemistry, 177(7), 2565-2574.
https://doi.org/10.1016/j.jssc.2004.03.024

Nikcevic I, Jokanović VR, Mitrić M, Nedić Z, Makovec D, Uskoković D. Mechanochemical synthesis of nanostructured fluorapatite/fluorhydroxyapatite and carbonated fluorapatite/fluorhydroxyapatite. in Journal of Solid State Chemistry. 2004;177(7):2565-2574.
doi:10.1016/j.jssc.2004.03.024 .

Nikcevic, I, Jokanović, Vukoman R., Mitrić, Miodrag, Nedić, Zoran, Makovec, Darko, Uskoković, Dragan, "Mechanochemical synthesis of nanostructured fluorapatite/fluorhydroxyapatite and carbonated fluorapatite/fluorhydroxyapatite" in Journal of Solid State Chemistry, 177, no. 7 (2004):2565-2574,
https://doi.org/10.1016/j.jssc.2004.03.024 . .