TY  - JOUR
AU  - Ahmetović, Sanita
AU  - Vasiljević, Zorka Ž.
AU  - Rajić, Vladimir
AU  - Bartolić, Dragana
AU  - Novaković, Mirjana M.
AU  - Tadić, Nenad B.
AU  - Cvjetićanin, Nikola
AU  - Nikolić, Maria Vesna
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10448
AB  - Pure and samarium (Sm3+) - or zirconium (Zr4+)-doped TiO2 nanofibers were synthesized by electrospinning method followed by calcination at 500 °C for 1 h. As-spun fibers were smooth, straight and continuous, whilst EDS analysis confirmed the fiber composition and incorporation of dopants in the fibers. Doping with Sm3+ and Zr4+ greatly inhibited the phase transformation of anatase to rutile, by surrounding of Sm3+ ions through formation of Ti-O-Sm bonds and by replacement of Ti4+ ions with larger Zr4+ ions. This was confirmed by HRTEM and SAED analysis. The size of nanofibers was determined to be 133 nm, 175 nm and 155 nm for pure, (0.5%)Sm3+:TiO2 and (1%)Zr4+:TiO2, respectively. After calcination, TiO2 crystal lattice with interplanar spacing of 0.353 nm of (101) crystal plane was not significantly disturbed by Sm doping whilst crystal lattice spacing of 0.357 nm of (101) planes of anatase phase in case TiO2:1.0%Zr4+, significantly differs from the value of pure TiO2 (0.352 nm), thus implying that Zr was doped into substitutional sites of the TiO2 lattice. The indirect band gaps were calculated to be in the range 3.07–3.24 eV. TiO2:0.5%Sm3+ and TiO2:1.0%Zr4+ exhibited higher specific surface area, of 47.1 and 59.4 m2/g, respectively, than pure TiO2 fibers (19.7 m2/g). Effects of Sm3+ and Zr4+ dopant content on the photodegradation efficiency of methylene blue (MB) were studied. TiO2:0.5%Sm3+ and TiO2:1.0%Zr4+ nanofibers have shown the highest photocatalytic activity of 97% and 98% with constant rates 0.01768 min−1 and 0.01939 min−1, respectively, within180 min irradiation under visible light.
T2  - Journal of Alloys and Compounds
T1  - Examination of the doping effects of samarium (Sm3+) and zirconium (Zr4+) on the photocatalytic activity of TiO2 nanofibers
VL  - 930
SP  - 167423
DO  - 10.1016/j.jallcom.2022.167423
ER  - 

@article{
author = "Ahmetović, Sanita and Vasiljević, Zorka Ž. and Rajić, Vladimir and Bartolić, Dragana and Novaković, Mirjana M. and Tadić, Nenad B. and Cvjetićanin, Nikola and Nikolić, Maria Vesna",
year = "2023",
abstract = "Pure and samarium (Sm3+) - or zirconium (Zr4+)-doped TiO2 nanofibers were synthesized by electrospinning method followed by calcination at 500 °C for 1 h. As-spun fibers were smooth, straight and continuous, whilst EDS analysis confirmed the fiber composition and incorporation of dopants in the fibers. Doping with Sm3+ and Zr4+ greatly inhibited the phase transformation of anatase to rutile, by surrounding of Sm3+ ions through formation of Ti-O-Sm bonds and by replacement of Ti4+ ions with larger Zr4+ ions. This was confirmed by HRTEM and SAED analysis. The size of nanofibers was determined to be 133 nm, 175 nm and 155 nm for pure, (0.5%)Sm3+:TiO2 and (1%)Zr4+:TiO2, respectively. After calcination, TiO2 crystal lattice with interplanar spacing of 0.353 nm of (101) crystal plane was not significantly disturbed by Sm doping whilst crystal lattice spacing of 0.357 nm of (101) planes of anatase phase in case TiO2:1.0%Zr4+, significantly differs from the value of pure TiO2 (0.352 nm), thus implying that Zr was doped into substitutional sites of the TiO2 lattice. The indirect band gaps were calculated to be in the range 3.07–3.24 eV. TiO2:0.5%Sm3+ and TiO2:1.0%Zr4+ exhibited higher specific surface area, of 47.1 and 59.4 m2/g, respectively, than pure TiO2 fibers (19.7 m2/g). Effects of Sm3+ and Zr4+ dopant content on the photodegradation efficiency of methylene blue (MB) were studied. TiO2:0.5%Sm3+ and TiO2:1.0%Zr4+ nanofibers have shown the highest photocatalytic activity of 97% and 98% with constant rates 0.01768 min−1 and 0.01939 min−1, respectively, within180 min irradiation under visible light.",
journal = "Journal of Alloys and Compounds",
title = "Examination of the doping effects of samarium (Sm3+) and zirconium (Zr4+) on the photocatalytic activity of TiO2 nanofibers",
volume = "930",
pages = "167423",
doi = "10.1016/j.jallcom.2022.167423"
}

Ahmetović, S., Vasiljević, Z. Ž., Rajić, V., Bartolić, D., Novaković, M. M., Tadić, N. B., Cvjetićanin, N.,& Nikolić, M. V.. (2023). Examination of the doping effects of samarium (Sm3+) and zirconium (Zr4+) on the photocatalytic activity of TiO2 nanofibers. in Journal of Alloys and Compounds, 930, 167423.
https://doi.org/10.1016/j.jallcom.2022.167423

Ahmetović S, Vasiljević ZŽ, Rajić V, Bartolić D, Novaković MM, Tadić NB, Cvjetićanin N, Nikolić MV. Examination of the doping effects of samarium (Sm3+) and zirconium (Zr4+) on the photocatalytic activity of TiO2 nanofibers. in Journal of Alloys and Compounds. 2023;930:167423.
doi:10.1016/j.jallcom.2022.167423 .

Ahmetović, Sanita, Vasiljević, Zorka Ž., Rajić, Vladimir, Bartolić, Dragana, Novaković, Mirjana M., Tadić, Nenad B., Cvjetićanin, Nikola, Nikolić, Maria Vesna, "Examination of the doping effects of samarium (Sm3+) and zirconium (Zr4+) on the photocatalytic activity of TiO2 nanofibers" in Journal of Alloys and Compounds, 930 (2023):167423,
https://doi.org/10.1016/j.jallcom.2022.167423 . .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Ammar, Souad
AU  - Ilić, Nikola
AU  - Singh, Charanjeet
AU  - Dojčinović, Milena
AU  - Jotania, Rajshree
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11874
AB  - SrCo0.2Zn0.2Fe11.6O18.8 hexaferrite was obtained by a “one-pot” green sol-gel synthesismethod utilizing aqueous mandarin orange (Citrus reticulata) peel extract as an eco-friendly reactant.The research objective was to analyze the influence of cobalt and zinc co-doping and the synthesisprocess on the structure, morphology, magnetic, dielectric and ferroelectric properties of strontiumhexaferrite in view of future applications. Structural and morphological characterization usingX-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electronmicroscopy coupled to energy dispersive X-ray spectrometry (SEM-EDX) confirmed the formationof a Co and Zn ion incorporated M-type magnetoplumbite with c/a lattice parameter ratio of 3.919as crystallite nanoplatelets of 32 and 53 nm in thickness and width, respectively. The magnetichysteresis loop of the synthesized powder recorded by a vibrating sample magnetometer (VSM) atroom temperature confirmed its ferromagnetic nature with a coercive field (Hc) of 2539 Oe and asaturation magnetization (Ms) and remanent magnetization (Mr) of 44.6 emu/g and 21.4 emu/g,respectively. Room temperature ferroelectric loops measured at 100 Hz showed a maximal (Pmax)and a remanent (Pr) polarization of 195.4 and 31.0 nC/cm2, respectively. Both increased when themagnitude of the applied electrical field increased in the 1–24 kV/cm range. The dielectric constantdecreased with the frequency increase, in accordance with the Maxwell–Wagner model, while theconductivity changed according to the Jonscher power law. The complex impedance was modeledwith an equivalent circuit, enabling identification of the dominant contribution of grain boundaryresistance (272.3 MW) and capacitance (7.16 pF).
T2  - Crystals
T1  - Ferroelectric, Magnetic and Dielectric Properties of SrCo0.2Zn0.2Fe11.6O18.8 Hexaferrite Obtained by “One-Pot” Green Sol-Gel Synthesis Utilizing Citrus reticulata Peel Extract
VL  - 13
IS  - 1452
DO  - 10.3390/cryst13101452
ER  - 

@article{
author = "Nikolić, Maria Vesna and Ammar, Souad and Ilić, Nikola and Singh, Charanjeet and Dojčinović, Milena and Jotania, Rajshree",
year = "2023",
abstract = "SrCo0.2Zn0.2Fe11.6O18.8 hexaferrite was obtained by a “one-pot” green sol-gel synthesismethod utilizing aqueous mandarin orange (Citrus reticulata) peel extract as an eco-friendly reactant.The research objective was to analyze the influence of cobalt and zinc co-doping and the synthesisprocess on the structure, morphology, magnetic, dielectric and ferroelectric properties of strontiumhexaferrite in view of future applications. Structural and morphological characterization usingX-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electronmicroscopy coupled to energy dispersive X-ray spectrometry (SEM-EDX) confirmed the formationof a Co and Zn ion incorporated M-type magnetoplumbite with c/a lattice parameter ratio of 3.919as crystallite nanoplatelets of 32 and 53 nm in thickness and width, respectively. The magnetichysteresis loop of the synthesized powder recorded by a vibrating sample magnetometer (VSM) atroom temperature confirmed its ferromagnetic nature with a coercive field (Hc) of 2539 Oe and asaturation magnetization (Ms) and remanent magnetization (Mr) of 44.6 emu/g and 21.4 emu/g,respectively. Room temperature ferroelectric loops measured at 100 Hz showed a maximal (Pmax)and a remanent (Pr) polarization of 195.4 and 31.0 nC/cm2, respectively. Both increased when themagnitude of the applied electrical field increased in the 1–24 kV/cm range. The dielectric constantdecreased with the frequency increase, in accordance with the Maxwell–Wagner model, while theconductivity changed according to the Jonscher power law. The complex impedance was modeledwith an equivalent circuit, enabling identification of the dominant contribution of grain boundaryresistance (272.3 MW) and capacitance (7.16 pF).",
journal = "Crystals",
title = "Ferroelectric, Magnetic and Dielectric Properties of SrCo0.2Zn0.2Fe11.6O18.8 Hexaferrite Obtained by “One-Pot” Green Sol-Gel Synthesis Utilizing Citrus reticulata Peel Extract",
volume = "13",
number = "1452",
doi = "10.3390/cryst13101452"
}

Nikolić, M. V., Ammar, S., Ilić, N., Singh, C., Dojčinović, M.,& Jotania, R.. (2023). Ferroelectric, Magnetic and Dielectric Properties of SrCo0.2Zn0.2Fe11.6O18.8 Hexaferrite Obtained by “One-Pot” Green Sol-Gel Synthesis Utilizing Citrus reticulata Peel Extract. in Crystals, 13(1452).
https://doi.org/10.3390/cryst13101452

Nikolić MV, Ammar S, Ilić N, Singh C, Dojčinović M, Jotania R. Ferroelectric, Magnetic and Dielectric Properties of SrCo0.2Zn0.2Fe11.6O18.8 Hexaferrite Obtained by “One-Pot” Green Sol-Gel Synthesis Utilizing Citrus reticulata Peel Extract. in Crystals. 2023;13(1452).
doi:10.3390/cryst13101452 .

Nikolić, Maria Vesna, Ammar, Souad, Ilić, Nikola, Singh, Charanjeet, Dojčinović, Milena, Jotania, Rajshree, "Ferroelectric, Magnetic and Dielectric Properties of SrCo0.2Zn0.2Fe11.6O18.8 Hexaferrite Obtained by “One-Pot” Green Sol-Gel Synthesis Utilizing Citrus reticulata Peel Extract" in Crystals, 13, no. 1452 (2023),
https://doi.org/10.3390/cryst13101452 . .

TY  - JOUR
AU  - Dojčinović, Milena
AU  - Vasiljević, Zorka
AU  - Rakočević, Lazar
AU  - Pavlović, Vera P.
AU  - Ammar-Merah, Souad
AU  - Vujančević, Jelena
AU  - Nikolić, Maria Vesna
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10620
AB  - Temperature- and humidity-sensing properties were evaluated of NixMg1-x spinel ferrites (0 ≤ x ≤ 1) synthesized by a sol-gel combustion method using citric acid as fuel and nitrate ions as oxidizing agents. After the exothermic reaction, amorphous powders were calcined at 700 °C ollowed by characterization with XRD, FTIR, XPS, EDS and Raman spectroscopy and FESEM icroscopy. Synthesized powders were tested as humidity- and temperature-sensing materials in the form of thick films on interdigitated electrodes on alumina substrate in a climatic chamber. The physicochemical investigation of synthesized materials revealed a cubic spinel Fd3m phase, nanosized but agglomerated particles with a partially to completely inverse spinel structure with increasing Ni content. Ni0.1Mg0.9Fe2O4 showed the highest material constant (B30,90) value of 3747 K and temperature sensitivity (α) of −4.08%/K compared to pure magnesium ferrite (B30,90 value of 3426 K and α of −3.73%/K) and the highest average sensitivity towards humidity of 922 kΩ/%RH in the relative humidity (RH) range of 40–90% at the working temperature of 25 °C.
T2  - Chemosensors
T1  - Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites
VL  - 11
IS  - 1
SP  - 34
DO  - 10.3390/chemosensors11010034
ER  - 

@article{
author = "Dojčinović, Milena and Vasiljević, Zorka and Rakočević, Lazar and Pavlović, Vera P. and Ammar-Merah, Souad and Vujančević, Jelena and Nikolić, Maria Vesna",
year = "2023",
abstract = "Temperature- and humidity-sensing properties were evaluated of NixMg1-x spinel ferrites (0 ≤ x ≤ 1) synthesized by a sol-gel combustion method using citric acid as fuel and nitrate ions as oxidizing agents. After the exothermic reaction, amorphous powders were calcined at 700 °C ollowed by characterization with XRD, FTIR, XPS, EDS and Raman spectroscopy and FESEM icroscopy. Synthesized powders were tested as humidity- and temperature-sensing materials in the form of thick films on interdigitated electrodes on alumina substrate in a climatic chamber. The physicochemical investigation of synthesized materials revealed a cubic spinel Fd3m phase, nanosized but agglomerated particles with a partially to completely inverse spinel structure with increasing Ni content. Ni0.1Mg0.9Fe2O4 showed the highest material constant (B30,90) value of 3747 K and temperature sensitivity (α) of −4.08%/K compared to pure magnesium ferrite (B30,90 value of 3426 K and α of −3.73%/K) and the highest average sensitivity towards humidity of 922 kΩ/%RH in the relative humidity (RH) range of 40–90% at the working temperature of 25 °C.",
journal = "Chemosensors",
title = "Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites",
volume = "11",
number = "1",
pages = "34",
doi = "10.3390/chemosensors11010034"
}

Dojčinović, M., Vasiljević, Z., Rakočević, L., Pavlović, V. P., Ammar-Merah, S., Vujančević, J.,& Nikolić, M. V.. (2023). Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites. in Chemosensors, 11(1), 34.
https://doi.org/10.3390/chemosensors11010034

Dojčinović M, Vasiljević Z, Rakočević L, Pavlović VP, Ammar-Merah S, Vujančević J, Nikolić MV. Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites. in Chemosensors. 2023;11(1):34.
doi:10.3390/chemosensors11010034 .

Dojčinović, Milena, Vasiljević, Zorka, Rakočević, Lazar, Pavlović, Vera P., Ammar-Merah, Souad, Vujančević, Jelena, Nikolić, Maria Vesna, "Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites" in Chemosensors, 11, no. 1 (2023):34,
https://doi.org/10.3390/chemosensors11010034 . .

TY  - CONF
AU  - Vasiljević, Zorka
AU  - Vunduk, Jovana
AU  - Dojčinović, Milena
AU  - Bartolić, Dragana
AU  - Ognjanović, Miloš
AU  - Tadić, Nenad
AU  - Mišković, Goran
AU  - Nikolić, Maria Vesna
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11676
AB  - Potential applications in wastewater treatment, energy storage, sensors, food packaging, etc. To date, these materials have been synthesized by different chemical and physical techniques. However many of them employ environmentally unfriendly solvents and toxic chemical compounds. To tackle this problem, use of renewable biomass such as plants and fungi as reducing or stabilizing agents in green synthesis has been considered as more sustainable option compared to toxic chemical compounds. These biological substances also behave as capping agent, which control the size and the shape of the nanoparticles. In this work, ZnO nanoparticles (NPs) have been prepared via simple, low cost and ecofriendly method using citrus fruit peel and extracts, Agaricus bisporus powder and extract as biological reducing agents. Zinc nitrate and zinc acetate were used as source of zinc ions. Structural and optical properties were investigated by X-ray diffraction analysis (XRD), Zeta potential, Fourier Transform Infrared (FTIR) spectroscopy, UV-visible (UV-vis) spectroscopy and Photoluminescence spectroscopy (PL). Morphological features were characterized by Field Emission Scanning Electron microscopy (FESEM) and High Resolution Transmission Electron Microscopy (HRTEM). Antibacterial and antioxidant activity was tested and evaluated.
PB  - Novi Sad : University of Novi Sad, Faculty of Technology
C3  - 2nd International Conference on Advanced Production and Processing : the book of abstracts; Oct 20-22, Novi Sad
T1  - Green biosynthesis of ZnO nanoparticles using agro-waste and their antibacterial and antioxidant activity
SP  - 106
EP  - 106
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11676
ER  - 

@conference{
author = "Vasiljević, Zorka and Vunduk, Jovana and Dojčinović, Milena and Bartolić, Dragana and Ognjanović, Miloš and Tadić, Nenad and Mišković, Goran and Nikolić, Maria Vesna",
year = "2022",
abstract = "Potential applications in wastewater treatment, energy storage, sensors, food packaging, etc. To date, these materials have been synthesized by different chemical and physical techniques. However many of them employ environmentally unfriendly solvents and toxic chemical compounds. To tackle this problem, use of renewable biomass such as plants and fungi as reducing or stabilizing agents in green synthesis has been considered as more sustainable option compared to toxic chemical compounds. These biological substances also behave as capping agent, which control the size and the shape of the nanoparticles. In this work, ZnO nanoparticles (NPs) have been prepared via simple, low cost and ecofriendly method using citrus fruit peel and extracts, Agaricus bisporus powder and extract as biological reducing agents. Zinc nitrate and zinc acetate were used as source of zinc ions. Structural and optical properties were investigated by X-ray diffraction analysis (XRD), Zeta potential, Fourier Transform Infrared (FTIR) spectroscopy, UV-visible (UV-vis) spectroscopy and Photoluminescence spectroscopy (PL). Morphological features were characterized by Field Emission Scanning Electron microscopy (FESEM) and High Resolution Transmission Electron Microscopy (HRTEM). Antibacterial and antioxidant activity was tested and evaluated.",
publisher = "Novi Sad : University of Novi Sad, Faculty of Technology",
journal = "2nd International Conference on Advanced Production and Processing : the book of abstracts; Oct 20-22, Novi Sad",
title = "Green biosynthesis of ZnO nanoparticles using agro-waste and their antibacterial and antioxidant activity",
pages = "106-106",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11676"
}

Vasiljević, Z., Vunduk, J., Dojčinović, M., Bartolić, D., Ognjanović, M., Tadić, N., Mišković, G.,& Nikolić, M. V.. (2022). Green biosynthesis of ZnO nanoparticles using agro-waste and their antibacterial and antioxidant activity. in 2nd International Conference on Advanced Production and Processing : the book of abstracts; Oct 20-22, Novi Sad
Novi Sad : University of Novi Sad, Faculty of Technology., 106-106.
https://hdl.handle.net/21.15107/rcub_vinar_11676

Vasiljević Z, Vunduk J, Dojčinović M, Bartolić D, Ognjanović M, Tadić N, Mišković G, Nikolić MV. Green biosynthesis of ZnO nanoparticles using agro-waste and their antibacterial and antioxidant activity. in 2nd International Conference on Advanced Production and Processing : the book of abstracts; Oct 20-22, Novi Sad. 2022;:106-106.
https://hdl.handle.net/21.15107/rcub_vinar_11676 .

Vasiljević, Zorka, Vunduk, Jovana, Dojčinović, Milena, Bartolić, Dragana, Ognjanović, Miloš, Tadić, Nenad, Mišković, Goran, Nikolić, Maria Vesna, "Green biosynthesis of ZnO nanoparticles using agro-waste and their antibacterial and antioxidant activity" in 2nd International Conference on Advanced Production and Processing : the book of abstracts; Oct 20-22, Novi Sad (2022):106-106,
https://hdl.handle.net/21.15107/rcub_vinar_11676 .

TY  - CONF
AU  - Mravik, Željko
AU  - Gloginjić, Marko
AU  - Bajuk-Bogdanović, Danica
AU  - Nikolić, Maria Vesna
AU  - Olejniczak, Andrzej
AU  - Gavrilov, Nemanja
AU  - Jovanović, Zoran
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12489
AB  - Graphene oxide (GO) has emerged as a promising material for electrochemical charge storage due to its high capacitance originating from all-surface morphology and different oxygen groups that participate in redox reactions. Ion beam irradiation can be identified as a technique where a controllable change of surface chemistry and structure of GO is possible through varying the energy and the fluence of an ion beam. In the present study, the influence of keV-energy ion-beam irradiation on the surface chemistry, structural and electrical properties of GO paper were investigated. The results of X-ray photoelectron spectroscopy and Fourier-transform infrared spectroscopy showed an increasing reduction of GO and the preferential removal of the alkoxy and epoxy groups with increasing fluence. Raman analysis showed that there is clear correlation between oxygen content and structural parameters of the irradiated GO. Electric properties of ion beam irradiated GO papers were investigated using the solid-state electrochemical impedance spectroscopy (EIS) and compared to the effects of thermal treatment. With irradiation, lower resistivity of GO papers was observed with fluencies up to 1 × 10 16 ions/cm 2 proving that desorption of basal plane oxygen groups is beneficial for improvement of electric characteristics of material. At higher fluence, a higher defect concentration resulted in an increase of resistivity of the irradiated samples. Additionally, EIS results outlined a different behavior of ion beam irradiated and thermally treated samples (capacitor vs. resistor, respectively), originating from the different extent of modification (ion beam irradiation – modification of few hundred nm and thermal treatment – bulk modification).
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - 19th Young Researchers’ Conference - Materials Science and Engineering : Program and the Book of Abstracts
T1  - Surface, structural and electric properties of ion beam irradiated graphene oxide papers
SP  - 38
EP  - 38
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12489
ER  - 

@conference{
author = "Mravik, Željko and Gloginjić, Marko and Bajuk-Bogdanović, Danica and Nikolić, Maria Vesna and Olejniczak, Andrzej and Gavrilov, Nemanja and Jovanović, Zoran",
year = "2021",
abstract = "Graphene oxide (GO) has emerged as a promising material for electrochemical charge storage due to its high capacitance originating from all-surface morphology and different oxygen groups that participate in redox reactions. Ion beam irradiation can be identified as a technique where a controllable change of surface chemistry and structure of GO is possible through varying the energy and the fluence of an ion beam. In the present study, the influence of keV-energy ion-beam irradiation on the surface chemistry, structural and electrical properties of GO paper were investigated. The results of X-ray photoelectron spectroscopy and Fourier-transform infrared spectroscopy showed an increasing reduction of GO and the preferential removal of the alkoxy and epoxy groups with increasing fluence. Raman analysis showed that there is clear correlation between oxygen content and structural parameters of the irradiated GO. Electric properties of ion beam irradiated GO papers were investigated using the solid-state electrochemical impedance spectroscopy (EIS) and compared to the effects of thermal treatment. With irradiation, lower resistivity of GO papers was observed with fluencies up to 1 × 10 16 ions/cm 2 proving that desorption of basal plane oxygen groups is beneficial for improvement of electric characteristics of material. At higher fluence, a higher defect concentration resulted in an increase of resistivity of the irradiated samples. Additionally, EIS results outlined a different behavior of ion beam irradiated and thermally treated samples (capacitor vs. resistor, respectively), originating from the different extent of modification (ion beam irradiation – modification of few hundred nm and thermal treatment – bulk modification).",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "19th Young Researchers’ Conference - Materials Science and Engineering : Program and the Book of Abstracts",
title = "Surface, structural and electric properties of ion beam irradiated graphene oxide papers",
pages = "38-38",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12489"
}

Mravik, Ž., Gloginjić, M., Bajuk-Bogdanović, D., Nikolić, M. V., Olejniczak, A., Gavrilov, N.,& Jovanović, Z.. (2021). Surface, structural and electric properties of ion beam irradiated graphene oxide papers. in 19th Young Researchers’ Conference - Materials Science and Engineering : Program and the Book of Abstracts
Belgrade : Institute of Technical Sciences of SASA., 38-38.
https://hdl.handle.net/21.15107/rcub_vinar_12489

Mravik Ž, Gloginjić M, Bajuk-Bogdanović D, Nikolić MV, Olejniczak A, Gavrilov N, Jovanović Z. Surface, structural and electric properties of ion beam irradiated graphene oxide papers. in 19th Young Researchers’ Conference - Materials Science and Engineering : Program and the Book of Abstracts. 2021;:38-38.
https://hdl.handle.net/21.15107/rcub_vinar_12489 .

Mravik, Željko, Gloginjić, Marko, Bajuk-Bogdanović, Danica, Nikolić, Maria Vesna, Olejniczak, Andrzej, Gavrilov, Nemanja, Jovanović, Zoran, "Surface, structural and electric properties of ion beam irradiated graphene oxide papers" in 19th Young Researchers’ Conference - Materials Science and Engineering : Program and the Book of Abstracts (2021):38-38,
https://hdl.handle.net/21.15107/rcub_vinar_12489 .

TY  - CONF
AU  - Labus, Nebojša
AU  - Rosić, Milena
AU  - Marković, Smilja
AU  - Nikolić, Maria Vesna
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10784
AB  - Sintering is often accompanied with phase transition. Phase transition kinetic is thushard to deconvolute due to the superposition of the sintering and phase transition dimensionalchange phenomena. Metastabile perovskite phase ZnTiO3 reforms to stabile spinel Zn2TiO4 at950°C with high kinetic rate. Dimensional change during heating of ZnTiO3 nano powdercompacts up to 1050°C was monitored using dilatometric thermo mechanical analyzer TMAmodel SETSYS Evolution. Shrinkage of simultaneous sintering and phase transition wererecorded. The obtained non-isothermally sintered specimens were then second run treatedwith same schedule. Sintering phenomenon of the ZnTiO3 nanopowder compact was alsorecorded up to 900°C with isothermal holding of 25 minutes. Here phase transition wasavoided with lower temperature and isothermal holding. Second run heating, of isothermallyobtained specimens at 900°C, was recorded with non-isothermal heating schedule to 1050°C.This has led to the dilatometric curve record of the ZnTiO3 phase transition in polycrystallinebulk specimen, now recorded without sintering. In such a manner when kinetic is complex,the separation of phenomena such as sintering, linear expansion and phase transition areleading to the knowledge of their mutual interconnected relations. Also application ofmathematical operations on dilatometric data leads to the established procedure for thesintering and phase transition data treatment.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
T1  - Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering
SP  - 41
UR  - https://hdl.handle.net/21.15107/rcub_dais_11894
ER  - 

@conference{
author = "Labus, Nebojša and Rosić, Milena and Marković, Smilja and Nikolić, Maria Vesna",
year = "2021",
abstract = "Sintering is often accompanied with phase transition. Phase transition kinetic is thushard to deconvolute due to the superposition of the sintering and phase transition dimensionalchange phenomena. Metastabile perovskite phase ZnTiO3 reforms to stabile spinel Zn2TiO4 at950°C with high kinetic rate. Dimensional change during heating of ZnTiO3 nano powdercompacts up to 1050°C was monitored using dilatometric thermo mechanical analyzer TMAmodel SETSYS Evolution. Shrinkage of simultaneous sintering and phase transition wererecorded. The obtained non-isothermally sintered specimens were then second run treatedwith same schedule. Sintering phenomenon of the ZnTiO3 nanopowder compact was alsorecorded up to 900°C with isothermal holding of 25 minutes. Here phase transition wasavoided with lower temperature and isothermal holding. Second run heating, of isothermallyobtained specimens at 900°C, was recorded with non-isothermal heating schedule to 1050°C.This has led to the dilatometric curve record of the ZnTiO3 phase transition in polycrystallinebulk specimen, now recorded without sintering. In such a manner when kinetic is complex,the separation of phenomena such as sintering, linear expansion and phase transition areleading to the knowledge of their mutual interconnected relations. Also application ofmathematical operations on dilatometric data leads to the established procedure for thesintering and phase transition data treatment.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade",
title = "Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering",
pages = "41",
url = "https://hdl.handle.net/21.15107/rcub_dais_11894"
}

Labus, N., Rosić, M., Marković, S.,& Nikolić, M. V.. (2021). Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
Belgrade : Serbian Ceramic Society., 41.
https://hdl.handle.net/21.15107/rcub_dais_11894

Labus N, Rosić M, Marković S, Nikolić MV. Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade. 2021;:41.
https://hdl.handle.net/21.15107/rcub_dais_11894 .

Labus, Nebojša, Rosić, Milena, Marković, Smilja, Nikolić, Maria Vesna, "Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering" in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade (2021):41,
https://hdl.handle.net/21.15107/rcub_dais_11894 .

TY  - JOUR
AU  - Vasiljević, Zorka
AU  - Dojčinović, Milena
AU  - Vujančević, Jelena
AU  - Janković-Častvan, Ivona
AU  - Ognjanović, Miloš
AU  - Tadić, Nenad B.
AU  - Stojadinović, Stevan
AU  - Branković, Goran O.
AU  - Nikolić, Maria Vesna
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9706
AB  - The aim of this work was to synthesize semiconducting oxide nanoparticles using a simple method with low production cost to be applied in natural sunlight for photocatalytic degradation of pollutants in waste water. Iron titanate (Fe2TiO5) nanoparticles with an orthorhombic structure were successfully synthesized using a modified sol–gel method and calcination at 750°C. The as-prepared Fe2TiO5 nanoparticles exhibited a moderate specific surface area. The mesoporous Fe2TiO5 nanoparticles possessed strong absorption in the visible-light region and the band gap was estimated to be around 2.16 eV. The photocatalytic activity was evaluated by the degradation of methylene blue under natural sunlight. The effect of parameters such as the amount of catalyst, initial concentration of the dye and pH of the dye solution on the removal efficiency of methylene blue was investigated. Fe2TiO5 showed high degradation efficiency in a strong alkaline medium that can be the result of the facilitated formation of OH radicals due to an increased concentration of hydroxyl ions.
T2  - Royal Society Open Science
T1  - Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method
VL  - 7
IS  - 9
SP  - 200708
DO  - 10.1098/rsos.200708
ER  - 

@article{
author = "Vasiljević, Zorka and Dojčinović, Milena and Vujančević, Jelena and Janković-Častvan, Ivona and Ognjanović, Miloš and Tadić, Nenad B. and Stojadinović, Stevan and Branković, Goran O. and Nikolić, Maria Vesna",
year = "2020",
abstract = "The aim of this work was to synthesize semiconducting oxide nanoparticles using a simple method with low production cost to be applied in natural sunlight for photocatalytic degradation of pollutants in waste water. Iron titanate (Fe2TiO5) nanoparticles with an orthorhombic structure were successfully synthesized using a modified sol–gel method and calcination at 750°C. The as-prepared Fe2TiO5 nanoparticles exhibited a moderate specific surface area. The mesoporous Fe2TiO5 nanoparticles possessed strong absorption in the visible-light region and the band gap was estimated to be around 2.16 eV. The photocatalytic activity was evaluated by the degradation of methylene blue under natural sunlight. The effect of parameters such as the amount of catalyst, initial concentration of the dye and pH of the dye solution on the removal efficiency of methylene blue was investigated. Fe2TiO5 showed high degradation efficiency in a strong alkaline medium that can be the result of the facilitated formation of OH radicals due to an increased concentration of hydroxyl ions.",
journal = "Royal Society Open Science",
title = "Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method",
volume = "7",
number = "9",
pages = "200708",
doi = "10.1098/rsos.200708"
}

Vasiljević, Z., Dojčinović, M., Vujančević, J., Janković-Častvan, I., Ognjanović, M., Tadić, N. B., Stojadinović, S., Branković, G. O.,& Nikolić, M. V.. (2020). Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method. in Royal Society Open Science, 7(9), 200708.
https://doi.org/10.1098/rsos.200708

Vasiljević Z, Dojčinović M, Vujančević J, Janković-Častvan I, Ognjanović M, Tadić NB, Stojadinović S, Branković GO, Nikolić MV. Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method. in Royal Society Open Science. 2020;7(9):200708.
doi:10.1098/rsos.200708 .

Vasiljević, Zorka, Dojčinović, Milena, Vujančević, Jelena, Janković-Častvan, Ivona, Ognjanović, Miloš, Tadić, Nenad B., Stojadinović, Stevan, Branković, Goran O., Nikolić, Maria Vesna, "Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method" in Royal Society Open Science, 7, no. 9 (2020):200708,
https://doi.org/10.1098/rsos.200708 . .

TY  - JOUR
AU  - Vasiljević, Zorka
AU  - Dojčinović, Milena
AU  - Krstić, Jugoslav B.
AU  - Ribić, Vesna
AU  - Tadić, Nenad B.
AU  - Ognjanović, Miloš
AU  - Auger, Sandrine
AU  - Vidić, Jasmina
AU  - Nikolić, Maria Vesna
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8941
AB  - Nanocrystalline iron manganite powder was synthesized using the sol–gel combustion process, with glycine as fuel. It was further calcined at 900 °C for 8 h, resulting in the formation of a loose cubic FeMnO3 powder with a small specific surface area, net-like structure and plate-like particles as confirmed by XRD, N2 physisorption, FESEM and TEM analyses. The metal ion release was studied by ICP-OES and showed that less than 10 ppb of Fe or Mn ions were released by leaching in water, but 0.36 ppm Fe and 3.69 ppm Mn was found in LB (Luria–Bertani) bacterial medium. The generation of reactive oxygen species (ROS) was monitored in distilled water and bacterial medium and showed that FeMnO3 particles do not generate O2˙− ions with or without UV irradiation, but synthesize H2O2 and show an antioxidative effect. Besides the higher stability of FeMnO3 particles in aqueous solution they showed an inhibitory effect on Bacillus subtilis growth in LB medium even at low concentrations (0.01 mg ml−1), but not in BHI medium even at 1 mg ml−1. This study points out that the mechanism of antibacterial action of engineered metal oxides needs continued investigation and specific experimental controls.
T2  - RSC Advances
T1  - Synthesis and antibacterial activity of iron manganite (FeMnO3) particles against the environmental bacterium Bacillus subtilis
VL  - 10
IS  - 23
SP  - 13879
EP  - 13888
DO  - 10.1039/D0RA01809K
ER  - 

@article{
author = "Vasiljević, Zorka and Dojčinović, Milena and Krstić, Jugoslav B. and Ribić, Vesna and Tadić, Nenad B. and Ognjanović, Miloš and Auger, Sandrine and Vidić, Jasmina and Nikolić, Maria Vesna",
year = "2020",
abstract = "Nanocrystalline iron manganite powder was synthesized using the sol–gel combustion process, with glycine as fuel. It was further calcined at 900 °C for 8 h, resulting in the formation of a loose cubic FeMnO3 powder with a small specific surface area, net-like structure and plate-like particles as confirmed by XRD, N2 physisorption, FESEM and TEM analyses. The metal ion release was studied by ICP-OES and showed that less than 10 ppb of Fe or Mn ions were released by leaching in water, but 0.36 ppm Fe and 3.69 ppm Mn was found in LB (Luria–Bertani) bacterial medium. The generation of reactive oxygen species (ROS) was monitored in distilled water and bacterial medium and showed that FeMnO3 particles do not generate O2˙− ions with or without UV irradiation, but synthesize H2O2 and show an antioxidative effect. Besides the higher stability of FeMnO3 particles in aqueous solution they showed an inhibitory effect on Bacillus subtilis growth in LB medium even at low concentrations (0.01 mg ml−1), but not in BHI medium even at 1 mg ml−1. This study points out that the mechanism of antibacterial action of engineered metal oxides needs continued investigation and specific experimental controls.",
journal = "RSC Advances",
title = "Synthesis and antibacterial activity of iron manganite (FeMnO3) particles against the environmental bacterium Bacillus subtilis",
volume = "10",
number = "23",
pages = "13879-13888",
doi = "10.1039/D0RA01809K"
}

Vasiljević, Z., Dojčinović, M., Krstić, J. B., Ribić, V., Tadić, N. B., Ognjanović, M., Auger, S., Vidić, J.,& Nikolić, M. V.. (2020). Synthesis and antibacterial activity of iron manganite (FeMnO3) particles against the environmental bacterium Bacillus subtilis. in RSC Advances, 10(23), 13879-13888.
https://doi.org/10.1039/D0RA01809K

Vasiljević Z, Dojčinović M, Krstić JB, Ribić V, Tadić NB, Ognjanović M, Auger S, Vidić J, Nikolić MV. Synthesis and antibacterial activity of iron manganite (FeMnO3) particles against the environmental bacterium Bacillus subtilis. in RSC Advances. 2020;10(23):13879-13888.
doi:10.1039/D0RA01809K .

Vasiljević, Zorka, Dojčinović, Milena, Krstić, Jugoslav B., Ribić, Vesna, Tadić, Nenad B., Ognjanović, Miloš, Auger, Sandrine, Vidić, Jasmina, Nikolić, Maria Vesna, "Synthesis and antibacterial activity of iron manganite (FeMnO3) particles against the environmental bacterium Bacillus subtilis" in RSC Advances, 10, no. 23 (2020):13879-13888,
https://doi.org/10.1039/D0RA01809K . .

TY  - CONF
AU  - Luković, Miloljub D.
AU  - Nikolić, Maria Vesna
AU  - Balaz, Nelu
AU  - Milutinov, Miodrag
AU  - Vasiljević, Zorka
AU  - Labus, Nebojša
AU  - Aleksić, Obrad S.
PY  - 2017
UR  - http://dais.sanu.ac.rs/123456789/15430
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7557
AB  - Starting hematite (Fe2O3), zinc oxide (ZnO) and manganese carbonate (MnCO3) powders were homogenized in a planetary ball mill in stainless steel bowls with stainless steel balls for 15 min, calcined in air at 1000 C for 2 h, milled in a planetary ball mill for 30 minutes, followed by 4 h in an aghate mill, sieved through a 325 mesh to form four starting powders: MnFe2O4, ZnFe2O4, Mn0.5Zn0.5Fe2O4 and a two-phase mixture of zinc and manganese ferrite. Structural properties of the obtained powders were analyzed using XRD, SEM and EDS. Electrical properties of disk shaped samples were measured at room temperature on an impedance analyzer in the frequency range 100 to 40 MHz, enabling determination and comparison of dielectric permittivity and complex impedance. Complex relative permeability of toroid shaped samples was measured on an impedance analyzer in the frequency range from 1 MHz to 500 MHz.
PB  - Belgrade : Institute for Multidisciplinary Research of the University of Belgrade
C3  - Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia
T1  - Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite
SP  - 102
EP  - 102
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7557
ER  - 

@conference{
editor = "Matović, Branko, Branković, Zorica, Bučevac, Dušan, Srdić, Vladimir",
author = "Luković, Miloljub D. and Nikolić, Maria Vesna and Balaz, Nelu and Milutinov, Miodrag and Vasiljević, Zorka and Labus, Nebojša and Aleksić, Obrad S.",
year = "2017",
abstract = "Starting hematite (Fe2O3), zinc oxide (ZnO) and manganese carbonate (MnCO3) powders were homogenized in a planetary ball mill in stainless steel bowls with stainless steel balls for 15 min, calcined in air at 1000 C for 2 h, milled in a planetary ball mill for 30 minutes, followed by 4 h in an aghate mill, sieved through a 325 mesh to form four starting powders: MnFe2O4, ZnFe2O4, Mn0.5Zn0.5Fe2O4 and a two-phase mixture of zinc and manganese ferrite. Structural properties of the obtained powders were analyzed using XRD, SEM and EDS. Electrical properties of disk shaped samples were measured at room temperature on an impedance analyzer in the frequency range 100 to 40 MHz, enabling determination and comparison of dielectric permittivity and complex impedance. Complex relative permeability of toroid shaped samples was measured on an impedance analyzer in the frequency range from 1 MHz to 500 MHz.",
publisher = "Belgrade : Institute for Multidisciplinary Research of the University of Belgrade",
journal = "Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia",
title = "Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite",
pages = "102-102",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7557"
}

Matović, B., Branković, Z., Bučevac, D., Srdić, V., Luković, M. D., Nikolić, M. V., Balaz, N., Milutinov, M., Vasiljević, Z., Labus, N.,& Aleksić, O. S.. (2017). Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite. in Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia
Belgrade : Institute for Multidisciplinary Research of the University of Belgrade., 102-102.
https://hdl.handle.net/21.15107/rcub_vinar_7557

Matović B, Branković Z, Bučevac D, Srdić V, Luković MD, Nikolić MV, Balaz N, Milutinov M, Vasiljević Z, Labus N, Aleksić OS. Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite. in Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia. 2017;:102-102.
https://hdl.handle.net/21.15107/rcub_vinar_7557 .

Matović, Branko, Branković, Zorica, Bučevac, Dušan, Srdić, Vladimir, Luković, Miloljub D., Nikolić, Maria Vesna, Balaz, Nelu, Milutinov, Miodrag, Vasiljević, Zorka, Labus, Nebojša, Aleksić, Obrad S., "Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite" in Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia (2017):102-102,
https://hdl.handle.net/21.15107/rcub_vinar_7557 .

TY  - CONF
AU  - Aleksić, Obrad S.
AU  - Milutinov, Predrag
AU  - Nikolić, Maria Vesna
AU  - Blaz, Nelu
AU  - Luković, Miloljub D.
AU  - Vasiljević, Zorka
AU  - Marković, Smilja
AU  - Živanov, Ljiljana D.
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/15427
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7562
AB  - Commercial Mn-Zn ferrite powder was milled in a planetary ball mill for 30-240 minutes. Particle size distribution in the milled powders was analyzed using a laser particle size analyzer and correlated with XRD and SEM analysis of the milled powders. Green disc and torroid samples were sintered in air in the temperature interval 800 -1300oC for 2 hours. SEM/EDS, AFM/MFM analysis of the sintered samples and measurements of their electrical properties such as DC resistance up to 500 MHz enabled establishment of a correlation between the microstructure and properties in the high-frequency range.
PB  - Belgrade : Institute for Multidisciplinary Research, University of Belgrade
C3  - Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia
T1  - Tailoring the microstructure of Mn-Zn ferrite to electronic properties
SP  - 101
EP  - 101
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7562
ER  - 

@conference{
editor = "Matović, Branko, Branković, Zorica, Bučevac, Dušan, Srdić, Vladimir",
author = "Aleksić, Obrad S. and Milutinov, Predrag and Nikolić, Maria Vesna and Blaz, Nelu and Luković, Miloljub D. and Vasiljević, Zorka and Marković, Smilja and Živanov, Ljiljana D.",
year = "2015",
abstract = "Commercial Mn-Zn ferrite powder was milled in a planetary ball mill for 30-240 minutes. Particle size distribution in the milled powders was analyzed using a laser particle size analyzer and correlated with XRD and SEM analysis of the milled powders. Green disc and torroid samples were sintered in air in the temperature interval 800 -1300oC for 2 hours. SEM/EDS, AFM/MFM analysis of the sintered samples and measurements of their electrical properties such as DC resistance up to 500 MHz enabled establishment of a correlation between the microstructure and properties in the high-frequency range.",
publisher = "Belgrade : Institute for Multidisciplinary Research, University of Belgrade",
journal = "Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia",
title = "Tailoring the microstructure of Mn-Zn ferrite to electronic properties",
pages = "101-101",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7562"
}

Matović, B., Branković, Z., Bučevac, D., Srdić, V., Aleksić, O. S., Milutinov, P., Nikolić, M. V., Blaz, N., Luković, M. D., Vasiljević, Z., Marković, S.,& Živanov, L. D.. (2015). Tailoring the microstructure of Mn-Zn ferrite to electronic properties. in Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia
Belgrade : Institute for Multidisciplinary Research, University of Belgrade., 101-101.
https://hdl.handle.net/21.15107/rcub_vinar_7562

Matović B, Branković Z, Bučevac D, Srdić V, Aleksić OS, Milutinov P, Nikolić MV, Blaz N, Luković MD, Vasiljević Z, Marković S, Živanov LD. Tailoring the microstructure of Mn-Zn ferrite to electronic properties. in Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia. 2015;:101-101.
https://hdl.handle.net/21.15107/rcub_vinar_7562 .

Matović, Branko, Branković, Zorica, Bučevac, Dušan, Srdić, Vladimir, Aleksić, Obrad S., Milutinov, Predrag, Nikolić, Maria Vesna, Blaz, Nelu, Luković, Miloljub D., Vasiljević, Zorka, Marković, Smilja, Živanov, Ljiljana D., "Tailoring the microstructure of Mn-Zn ferrite to electronic properties" in Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia (2015):101-101,
https://hdl.handle.net/21.15107/rcub_vinar_7562 .

TY  - CONF
AU  - Vasiljević, Zorka
AU  - Nikolić, Maria Vesna
AU  - Aleksić, Obrad S.
AU  - Labus, Nebojša
AU  - Luković, Miloljub D.
AU  - Marković, Smilja
AU  - Nikolić, Pantelija
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7566
AB  - Starting powders of TiO2 (anatase) and Fe2O3 (hematite) were mixed in the molar ratio 1:1. Pseudobrookite powder was obtained by a combined milling/calcination procedure. Particle size distribution was analyzed on a laser particle size analyzer and correlated with XRD and SEM analysis. The band gap was determined using UV/Vis spectroscopy. Green samples were sintered in a dilatometer and at 1000oC for 2h in air. Thermal diffusivity was determined from photoacoustic measurements. Electrical conductivity measurements were performed. The aim was to obtain pseudobrookite with properties suitable for polymer paste for thick films to be applied as gas sensors.
PB  - Belgrade : Institute for Multidisciplinary Research, University of Belgrade
C3  - Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia
T1  - Structural and Electronic Properties of Pseudobrookite
SP  - 98
EP  - 99
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7566
ER  - 

@conference{
editor = "Matović, Branko, Branković, Zorica, Bučevac, Dušan, Srdić, Vladimir",
author = "Vasiljević, Zorka and Nikolić, Maria Vesna and Aleksić, Obrad S. and Labus, Nebojša and Luković, Miloljub D. and Marković, Smilja and Nikolić, Pantelija",
year = "2015",
abstract = "Starting powders of TiO2 (anatase) and Fe2O3 (hematite) were mixed in the molar ratio 1:1. Pseudobrookite powder was obtained by a combined milling/calcination procedure. Particle size distribution was analyzed on a laser particle size analyzer and correlated with XRD and SEM analysis. The band gap was determined using UV/Vis spectroscopy. Green samples were sintered in a dilatometer and at 1000oC for 2h in air. Thermal diffusivity was determined from photoacoustic measurements. Electrical conductivity measurements were performed. The aim was to obtain pseudobrookite with properties suitable for polymer paste for thick films to be applied as gas sensors.",
publisher = "Belgrade : Institute for Multidisciplinary Research, University of Belgrade",
journal = "Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia",
title = "Structural and Electronic Properties of Pseudobrookite",
pages = "98-99",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7566"
}

Matović, B., Branković, Z., Bučevac, D., Srdić, V., Vasiljević, Z., Nikolić, M. V., Aleksić, O. S., Labus, N., Luković, M. D., Marković, S.,& Nikolić, P.. (2015). Structural and Electronic Properties of Pseudobrookite. in Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia
Belgrade : Institute for Multidisciplinary Research, University of Belgrade., 98-99.
https://hdl.handle.net/21.15107/rcub_vinar_7566

Matović B, Branković Z, Bučevac D, Srdić V, Vasiljević Z, Nikolić MV, Aleksić OS, Labus N, Luković MD, Marković S, Nikolić P. Structural and Electronic Properties of Pseudobrookite. in Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia. 2015;:98-99.
https://hdl.handle.net/21.15107/rcub_vinar_7566 .

Matović, Branko, Branković, Zorica, Bučevac, Dušan, Srdić, Vladimir, Vasiljević, Zorka, Nikolić, Maria Vesna, Aleksić, Obrad S., Labus, Nebojša, Luković, Miloljub D., Marković, Smilja, Nikolić, Pantelija, "Structural and Electronic Properties of Pseudobrookite" in Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia (2015):98-99,
https://hdl.handle.net/21.15107/rcub_vinar_7566 .

TY  - CONF
AU  - Vasiljević, Zorka
AU  - Vasiljević-Radović, Dana
AU  - Nikolić, Maria Vesna
AU  - Labus, Nebojša
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/15426
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7567
AB  - Metastabile nanopowder ZnTiO3 pressed into cylindrical compacts at 200 MPa was submitted to conventional heating with isothermal holding at 931oC for 10 minutes, 25 minutes and 40 minutes. Same compacts were heated with two-step sintering schedule with maximal 912oC and isothermal holding at 896oC, for approximately the same holding times as with isothermal. Shrinkage during heating was monitored with dilatometric device, while microstructure was determined with atomic force microscopy. XRD patterns were collected for the most prominent samples. Sintered specimens microstructure showed differences introduced during last sintering stage by two heating schedules.
PB  - Belgrade : Institute for Multidisciplinary Research, University of Belgrade
C3  - Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia
T1  - Two step sintering of the ZnTiO3 nanopowder
SP  - 101
EP  - 101
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7567
ER  - 

@conference{
editor = "Matović, Branko, Branković, Zorica, Bučevac, Dušan, Srdić, Vladimir",
author = "Vasiljević, Zorka and Vasiljević-Radović, Dana and Nikolić, Maria Vesna and Labus, Nebojša",
year = "2015",
abstract = "Metastabile nanopowder ZnTiO3 pressed into cylindrical compacts at 200 MPa was submitted to conventional heating with isothermal holding at 931oC for 10 minutes, 25 minutes and 40 minutes. Same compacts were heated with two-step sintering schedule with maximal 912oC and isothermal holding at 896oC, for approximately the same holding times as with isothermal. Shrinkage during heating was monitored with dilatometric device, while microstructure was determined with atomic force microscopy. XRD patterns were collected for the most prominent samples. Sintered specimens microstructure showed differences introduced during last sintering stage by two heating schedules.",
publisher = "Belgrade : Institute for Multidisciplinary Research, University of Belgrade",
journal = "Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia",
title = "Two step sintering of the ZnTiO3 nanopowder",
pages = "101-101",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7567"
}

Matović, B., Branković, Z., Bučevac, D., Srdić, V., Vasiljević, Z., Vasiljević-Radović, D., Nikolić, M. V.,& Labus, N.. (2015). Two step sintering of the ZnTiO3 nanopowder. in Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia
Belgrade : Institute for Multidisciplinary Research, University of Belgrade., 101-101.
https://hdl.handle.net/21.15107/rcub_vinar_7567

Matović B, Branković Z, Bučevac D, Srdić V, Vasiljević Z, Vasiljević-Radović D, Nikolić MV, Labus N. Two step sintering of the ZnTiO3 nanopowder. in Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia. 2015;:101-101.
https://hdl.handle.net/21.15107/rcub_vinar_7567 .

Matović, Branko, Branković, Zorica, Bučevac, Dušan, Srdić, Vladimir, Vasiljević, Zorka, Vasiljević-Radović, Dana, Nikolić, Maria Vesna, Labus, Nebojša, "Two step sintering of the ZnTiO3 nanopowder" in Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia (2015):101-101,
https://hdl.handle.net/21.15107/rcub_vinar_7567 .

TY  - JOUR
AU  - Vasiljević, Zorka
AU  - Luković, Miloljub D.
AU  - Nikolić, Maria Vesna
AU  - Tasić, Nikola B.
AU  - Mitrić, Miodrag
AU  - Aleksić, Obrad S.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/504
AB  - Thick films using starting nanopowders of TiO2 (anatase 99.7%) and alpha-Fe2O3 (hematite) mixed in the weight ratios 60:40 and 40:60 for thick film paste were fabricated by screen printing technology on an alumina substrate. Samples were sintered at temperatures of 800-950 degrees C for 60 min. Structural and electronic properties were analyzed by XRD and SEM analysis, UV/vis spectroscopy and current voltage analysis in view of potential application as gas sensors and anodes in photoelectrochemical cells for hydrogen generation and water splitting. XRD analysis showed that at 800 degrees C monoclinic pseudobrookite formed and anatase had transformed into rutile. Increase in sintering temperature lead to a gradual transformation of monoclinic pseudobrookite into the orthorhombic phase. SEM analysis showed that a homogenous small grain structure was obtained especially in the case of thick film samples with the 40:60 ratio of starting anatase and hematite sintered at 850 degrees C. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Nanostructured Fe2O3/TiO2 thick films: Analysis of structural and electronic properties
VL  - 41
IS  - 5
SP  - 6889
EP  - 6897
DO  - 10.1016/j.ceramint.2015.01.141
ER  - 

@article{
author = "Vasiljević, Zorka and Luković, Miloljub D. and Nikolić, Maria Vesna and Tasić, Nikola B. and Mitrić, Miodrag and Aleksić, Obrad S.",
year = "2015",
abstract = "Thick films using starting nanopowders of TiO2 (anatase 99.7%) and alpha-Fe2O3 (hematite) mixed in the weight ratios 60:40 and 40:60 for thick film paste were fabricated by screen printing technology on an alumina substrate. Samples were sintered at temperatures of 800-950 degrees C for 60 min. Structural and electronic properties were analyzed by XRD and SEM analysis, UV/vis spectroscopy and current voltage analysis in view of potential application as gas sensors and anodes in photoelectrochemical cells for hydrogen generation and water splitting. XRD analysis showed that at 800 degrees C monoclinic pseudobrookite formed and anatase had transformed into rutile. Increase in sintering temperature lead to a gradual transformation of monoclinic pseudobrookite into the orthorhombic phase. SEM analysis showed that a homogenous small grain structure was obtained especially in the case of thick film samples with the 40:60 ratio of starting anatase and hematite sintered at 850 degrees C. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Nanostructured Fe2O3/TiO2 thick films: Analysis of structural and electronic properties",
volume = "41",
number = "5",
pages = "6889-6897",
doi = "10.1016/j.ceramint.2015.01.141"
}

Vasiljević, Z., Luković, M. D., Nikolić, M. V., Tasić, N. B., Mitrić, M.,& Aleksić, O. S.. (2015). Nanostructured Fe2O3/TiO2 thick films: Analysis of structural and electronic properties. in Ceramics International, 41(5), 6889-6897.
https://doi.org/10.1016/j.ceramint.2015.01.141

Vasiljević Z, Luković MD, Nikolić MV, Tasić NB, Mitrić M, Aleksić OS. Nanostructured Fe2O3/TiO2 thick films: Analysis of structural and electronic properties. in Ceramics International. 2015;41(5):6889-6897.
doi:10.1016/j.ceramint.2015.01.141 .

Vasiljević, Zorka, Luković, Miloljub D., Nikolić, Maria Vesna, Tasić, Nikola B., Mitrić, Miodrag, Aleksić, Obrad S., "Nanostructured Fe2O3/TiO2 thick films: Analysis of structural and electronic properties" in Ceramics International, 41, no. 5 (2015):6889-6897,
https://doi.org/10.1016/j.ceramint.2015.01.141 . .

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, Maria Vesna
AU  - Slankamenac, Miloš P.
AU  - Nikolić, N.
AU  - Sekulić, D. I.
AU  - Aleksić, Obrad S.
AU  - Mitrić, Miodrag
AU  - Ivetić, Tamara B.
AU  - Pavlović, Vladimir B.
AU  - Nikolić, Pantelija
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/523
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7467
AB  - The effects of Zn-doping on the dielectric behavior and electrical properties of bulk alpha-Fe2O3 have been studied. X-ray diffraction analysis revealed the presence of two phases in all samples: hematite and spinel ZnFe2O4, with the amount of spinel phase increasing with increasing Zn content. Scanning electron microscopy analysis combined with energy dispersive X-ray spectroscopy showed that the Zn-bearing phase occurred in the form of individual spinel ZnFe2O4 grains in a hematite matrix. DC conductivity was measured in the temperature range 25-225°C (298-498 K). Impedance spectroscopy measurements in the same temperature range were carried out in the frequency range 100Hz to 10 MHz. Increase in the Zn content resulted in increased electrical conductivity and higher values of the dielectric constant. The resistance and capacitance of grains and grain boundaries were analyzed by modeling the experimental results using an equivalent circuit.
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  - Study of Dielectric Behavior and Electrical Properties of Hematite a-Fe2O3 Doped with Zn
SP  - 8
EP  - 8
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7467
ER  - 

@conference{
author = "Nikolić, Maria Vesna and Slankamenac, Miloš P. and Nikolić, N. and Sekulić, D. I. and Aleksić, Obrad S. and Mitrić, Miodrag and Ivetić, Tamara B. and Pavlović, Vladimir B. and Nikolić, Pantelija",
year = "2012",
abstract = "The effects of Zn-doping on the dielectric behavior and electrical properties of bulk alpha-Fe2O3 have been studied. X-ray diffraction analysis revealed the presence of two phases in all samples: hematite and spinel ZnFe2O4, with the amount of spinel phase increasing with increasing Zn content. Scanning electron microscopy analysis combined with energy dispersive X-ray spectroscopy showed that the Zn-bearing phase occurred in the form of individual spinel ZnFe2O4 grains in a hematite matrix. DC conductivity was measured in the temperature range 25-225°C (298-498 K). Impedance spectroscopy measurements in the same temperature range were carried out in the frequency range 100Hz to 10 MHz. Increase in the Zn content resulted in increased electrical conductivity and higher values of the dielectric constant. The resistance and capacitance of grains and grain boundaries were analyzed by modeling the experimental results using an equivalent circuit.",
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 = "Study of Dielectric Behavior and Electrical Properties of Hematite a-Fe2O3 Doped with Zn",
pages = "8-8",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7467"
}

Nikolić, M. V., Slankamenac, M. P., Nikolić, N., Sekulić, D. I., Aleksić, O. S., Mitrić, M., Ivetić, T. B., Pavlović, V. B.,& Nikolić, P.. (2012). Study of Dielectric Behavior and Electrical Properties of Hematite a-Fe2O3 Doped with Zn. 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., 8-8.
https://hdl.handle.net/21.15107/rcub_vinar_7467

Nikolić MV, Slankamenac MP, Nikolić N, Sekulić DI, Aleksić OS, Mitrić M, Ivetić TB, Pavlović VB, Nikolić P. Study of Dielectric Behavior and Electrical Properties of Hematite a-Fe2O3 Doped with Zn. in Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade. 2012;:8-8.
https://hdl.handle.net/21.15107/rcub_vinar_7467 .

Nikolić, Maria Vesna, Slankamenac, Miloš P., Nikolić, N., Sekulić, D. I., Aleksić, Obrad S., Mitrić, Miodrag, Ivetić, Tamara B., Pavlović, Vladimir B., Nikolić, Pantelija, "Study of Dielectric Behavior and Electrical Properties of Hematite a-Fe2O3 Doped with Zn" in Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade (2012):8-8,
https://hdl.handle.net/21.15107/rcub_vinar_7467 .

TY  - JOUR
AU  - Obradović, Nina
AU  - Mitrić, Miodrag
AU  - Nikolić, Maria Vesna
AU  - Minic, Dragica
AU  - Mitrovic, Nebojsa
AU  - Ristic, Momcilo M.
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3674
AB  - Starting mixtures of ZnO, TiO(2) and MgO (0, 1.25 and 2.5 wt.% MgO) powders were mechanically activated for 15 min in a planetary ball mill. The powders obtained were sintered non-isothermally to temperatures between 800 and 1100 degrees C and then held at those temperatures for 120 min. Analysis of the influence of MgO addition on the synthesis of zinc-titanate ceramics showed that its addition increased slightly the temperature at which the reaction process started, accelerated the reaction and resulted in higher sample densities. These results were correlated with the results of structural characterization using X-ray powder diffraction method and SEM analysis. Also, the results of electric resistivity, capacitance and loss tangent of the sintered samples were obtained. (C) 2008 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Influence of MgO addition on the synthesis and electrical properties of sintered zinc-titanate ceramics
VL  - 471
IS  - 1-2
SP  - 272
EP  - 277
DO  - 10.1016/j.jallcom.2008.03.090
ER  - 

@article{
author = "Obradović, Nina and Mitrić, Miodrag and Nikolić, Maria Vesna and Minic, Dragica and Mitrovic, Nebojsa and Ristic, Momcilo M.",
year = "2009",
abstract = "Starting mixtures of ZnO, TiO(2) and MgO (0, 1.25 and 2.5 wt.% MgO) powders were mechanically activated for 15 min in a planetary ball mill. The powders obtained were sintered non-isothermally to temperatures between 800 and 1100 degrees C and then held at those temperatures for 120 min. Analysis of the influence of MgO addition on the synthesis of zinc-titanate ceramics showed that its addition increased slightly the temperature at which the reaction process started, accelerated the reaction and resulted in higher sample densities. These results were correlated with the results of structural characterization using X-ray powder diffraction method and SEM analysis. Also, the results of electric resistivity, capacitance and loss tangent of the sintered samples were obtained. (C) 2008 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Influence of MgO addition on the synthesis and electrical properties of sintered zinc-titanate ceramics",
volume = "471",
number = "1-2",
pages = "272-277",
doi = "10.1016/j.jallcom.2008.03.090"
}

Obradović, N., Mitrić, M., Nikolić, M. V., Minic, D., Mitrovic, N.,& Ristic, M. M.. (2009). Influence of MgO addition on the synthesis and electrical properties of sintered zinc-titanate ceramics. in Journal of Alloys and Compounds, 471(1-2), 272-277.
https://doi.org/10.1016/j.jallcom.2008.03.090

Obradović N, Mitrić M, Nikolić MV, Minic D, Mitrovic N, Ristic MM. Influence of MgO addition on the synthesis and electrical properties of sintered zinc-titanate ceramics. in Journal of Alloys and Compounds. 2009;471(1-2):272-277.
doi:10.1016/j.jallcom.2008.03.090 .

Obradović, Nina, Mitrić, Miodrag, Nikolić, Maria Vesna, Minic, Dragica, Mitrovic, Nebojsa, Ristic, Momcilo M., "Influence of MgO addition on the synthesis and electrical properties of sintered zinc-titanate ceramics" in Journal of Alloys and Compounds, 471, no. 1-2 (2009):272-277,
https://doi.org/10.1016/j.jallcom.2008.03.090 . .

TY  - CONF
AU  - Obradović, Nina
AU  - Stevanović, Suzana
AU  - Mitrić, Miodrag
AU  - Nikolić, Maria Vesna
AU  - Ristić, Momčilo M.
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7499
AB  - The aim of this work was analysis of isothermal sintering of zinc titanate ceramics doped with MgO obtained by mechanical activation. Mixtures of ZnO, Ti02 and MgO (0, 1.25 and 2.5%) were mechanically activated 15 minutes in a planetary ball mill. The powders obtained were pressed under different pressures and the results were fitted with a phenomenological compacting equation. Isothermal sintering was performed in air for 120 minutes at four different temperatures. Structural characterization of ZnO-TiOrMgb system' after milling and sintering was performed at room temperature using XRPD measurements. DTA measurements showed different activation energies for pure and doped ZnO-Ti02 systems. The main conclusions are that doped zinc titanate samples achieve higher densities after sintering and that addition of MgO stabilizes the crystal structure of zinc titanate.
PB  - Čačak : Technical Faculty
C3  - VII Scientific Meeting Physics and Technology of Materials - FITEM '07
T1  - Analysis of isothermal sintering of zinc-titanate doped with MgO
SP  - 27
EP  - 27
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7499
ER  - 

@conference{
author = "Obradović, Nina and Stevanović, Suzana and Mitrić, Miodrag and Nikolić, Maria Vesna and Ristić, Momčilo M.",
year = "2007",
abstract = "The aim of this work was analysis of isothermal sintering of zinc titanate ceramics doped with MgO obtained by mechanical activation. Mixtures of ZnO, Ti02 and MgO (0, 1.25 and 2.5%) were mechanically activated 15 minutes in a planetary ball mill. The powders obtained were pressed under different pressures and the results were fitted with a phenomenological compacting equation. Isothermal sintering was performed in air for 120 minutes at four different temperatures. Structural characterization of ZnO-TiOrMgb system' after milling and sintering was performed at room temperature using XRPD measurements. DTA measurements showed different activation energies for pure and doped ZnO-Ti02 systems. The main conclusions are that doped zinc titanate samples achieve higher densities after sintering and that addition of MgO stabilizes the crystal structure of zinc titanate.",
publisher = "Čačak : Technical Faculty",
journal = "VII Scientific Meeting Physics and Technology of Materials - FITEM '07",
title = "Analysis of isothermal sintering of zinc-titanate doped with MgO",
pages = "27-27",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7499"
}

Obradović, N., Stevanović, S., Mitrić, M., Nikolić, M. V.,& Ristić, M. M.. (2007). Analysis of isothermal sintering of zinc-titanate doped with MgO. in VII Scientific Meeting Physics and Technology of Materials - FITEM '07
Čačak : Technical Faculty., 27-27.
https://hdl.handle.net/21.15107/rcub_vinar_7499

Obradović N, Stevanović S, Mitrić M, Nikolić MV, Ristić MM. Analysis of isothermal sintering of zinc-titanate doped with MgO. in VII Scientific Meeting Physics and Technology of Materials - FITEM '07. 2007;:27-27.
https://hdl.handle.net/21.15107/rcub_vinar_7499 .

Obradović, Nina, Stevanović, Suzana, Mitrić, Miodrag, Nikolić, Maria Vesna, Ristić, Momčilo M., "Analysis of isothermal sintering of zinc-titanate doped with MgO" in VII Scientific Meeting Physics and Technology of Materials - FITEM '07 (2007):27-27,
https://hdl.handle.net/21.15107/rcub_vinar_7499 .

TY  - CONF
AU  - Obradović, Nina
AU  - Stevanović, Suzana
AU  - Mitrić, Miodrag
AU  - Nikolić, Maria Vesna
AU  - Ristić, Momčilo M.
PY  - 2007
UR  - http://dais.sanu.ac.rs/123456789/313
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7394
AB  - Poster presented at the Fizika i tehnologija materijala (Physics and Technology of Materials), FITEM '07, Čačak, Serbia, August 6-8, 2007.
T1  - Analysis of Isothermal Sintering of Zinc-Titanate Doped with MgO
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7394
ER  - 

@conference{
author = "Obradović, Nina and Stevanović, Suzana and Mitrić, Miodrag and Nikolić, Maria Vesna and Ristić, Momčilo M.",
year = "2007",
abstract = "Poster presented at the Fizika i tehnologija materijala (Physics and Technology of Materials), FITEM '07, Čačak, Serbia, August 6-8, 2007.",
title = "Analysis of Isothermal Sintering of Zinc-Titanate Doped with MgO",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7394"
}

Obradović, N., Stevanović, S., Mitrić, M., Nikolić, M. V.,& Ristić, M. M.. (2007). Analysis of Isothermal Sintering of Zinc-Titanate Doped with MgO. .
https://hdl.handle.net/21.15107/rcub_vinar_7394

Obradović N, Stevanović S, Mitrić M, Nikolić MV, Ristić MM. Analysis of Isothermal Sintering of Zinc-Titanate Doped with MgO. 2007;.
https://hdl.handle.net/21.15107/rcub_vinar_7394 .

Obradović, Nina, Stevanović, Suzana, Mitrić, Miodrag, Nikolić, Maria Vesna, Ristić, Momčilo M., "Analysis of Isothermal Sintering of Zinc-Titanate Doped with MgO" (2007),
https://hdl.handle.net/21.15107/rcub_vinar_7394 .

TY  - JOUR
AU  - Pavlović, Vera P.
AU  - Nikolić, Maria Vesna
AU  - Spasojević, Vojislav
AU  - Blanuša, Jovan
AU  - Živković, L.
AU  - Stojanovic, BD
AU  - Pavlović, Vladimir B.
AU  - Ristic, MM
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6587
AB  - In this paper the influence of tribophysical activation on non-isothermal sintering of barium titanate has been investigated. BaTiO3 Powders were tribophysically activated in a planetary ball mill for 0, 60 and 120 min., pressed and non-isothermally sintered up to 1380 degrees C. Dilatometric analysis was performed in air in the temperature range from room temperature to 1380 degrees C with heating rates of 10, 20 and 30 degrees C/min. The samples were analyzed by the X-ray powder diffraction method. Investigation of the morphology of microstructure constituents was performed using the scanning electron microsocopy method. With the purpose of optimizing technological parameters the results obtained by microstructure analysis were correlated with the results of quantitative dilatometric analysis.
T2  - Materials Science Forum
T1  - The influence of tribophysical activation on non-isothermal sintering of BaTiO3 ceramics
VL  - 514-516
SP  - 1566
EP  - 1570
DO  - 10.4028/www.scientific.net/MSF.514-516.1566
ER  - 

@article{
author = "Pavlović, Vera P. and Nikolić, Maria Vesna and Spasojević, Vojislav and Blanuša, Jovan and Živković, L. and Stojanovic, BD and Pavlović, Vladimir B. and Ristic, MM",
year = "2006",
abstract = "In this paper the influence of tribophysical activation on non-isothermal sintering of barium titanate has been investigated. BaTiO3 Powders were tribophysically activated in a planetary ball mill for 0, 60 and 120 min., pressed and non-isothermally sintered up to 1380 degrees C. Dilatometric analysis was performed in air in the temperature range from room temperature to 1380 degrees C with heating rates of 10, 20 and 30 degrees C/min. The samples were analyzed by the X-ray powder diffraction method. Investigation of the morphology of microstructure constituents was performed using the scanning electron microsocopy method. With the purpose of optimizing technological parameters the results obtained by microstructure analysis were correlated with the results of quantitative dilatometric analysis.",
journal = "Materials Science Forum",
title = "The influence of tribophysical activation on non-isothermal sintering of BaTiO3 ceramics",
volume = "514-516",
pages = "1566-1570",
doi = "10.4028/www.scientific.net/MSF.514-516.1566"
}

Pavlović, V. P., Nikolić, M. V., Spasojević, V., Blanuša, J., Živković, L., Stojanovic, B., Pavlović, V. B.,& Ristic, M.. (2006). The influence of tribophysical activation on non-isothermal sintering of BaTiO3 ceramics. in Materials Science Forum, 514-516, 1566-1570.
https://doi.org/10.4028/www.scientific.net/MSF.514-516.1566

Pavlović VP, Nikolić MV, Spasojević V, Blanuša J, Živković L, Stojanovic B, Pavlović VB, Ristic M. The influence of tribophysical activation on non-isothermal sintering of BaTiO3 ceramics. in Materials Science Forum. 2006;514-516:1566-1570.
doi:10.4028/www.scientific.net/MSF.514-516.1566 .

Pavlović, Vera P., Nikolić, Maria Vesna, Spasojević, Vojislav, Blanuša, Jovan, Živković, L., Stojanovic, BD, Pavlović, Vladimir B., Ristic, MM, "The influence of tribophysical activation on non-isothermal sintering of BaTiO3 ceramics" in Materials Science Forum, 514-516 (2006):1566-1570,
https://doi.org/10.4028/www.scientific.net/MSF.514-516.1566 . .