TY  - JOUR
AU  - Perać, Sanja
AU  - M.Savić, Slavica
AU  - Branković, Zorica
AU  - Bernik, Slavko
AU  - Radojković, Aleksandar
AU  - Kojić, Sanja
AU  - Vasiljević, Dragana
AU  - Branković, Goran
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1561
AB  - Polycrystalline samples of NaCo2−xCuxO4 (x = 0, 0.01, 0.03, 0.05) were obtained from powder precursors synthesized by a mechanochemically assisted solid-state reaction method (MASSR) and a citric acid complex method (CAC). Ceramic samples were prepared by pressing into disc-shaped pellets and subsequently sintering at 880 °C in an argon atmosphere. Effects of low concentrations of Cu doping and the above-mentioned synthesis procedures on the thermoelectric and mechanical properties were observed. The electrical resistivity (ρ), the thermal conductivity (κ) and the Seebeck coefficient (S) were measured simultaneously in the temperature gradient (ΔT) between the hot and cold side of the sample, and the figure of merit (ZT) was subsequently calculated. The ZT of the CAC samples was higher compared with the MASSR samples. The highest ZT value of 0.061 at ΔT = 473 K was obtained for the sample with 5 mol% of Cu prepared by the CAC method. The CAC samples showed better mechanical properties compared to the MASSR samples due to the higher hardness of the CAC samples which is a consequence of homogeneous microstructure and higher density obtained during sintering of these samples. The results confirmed that, besides the concentration of Cu, the synthesis procedure considerably affected the thermoelectric and mechanical properties of NaCo2O4 (NCO) ceramics.
PB  - MDPI
T2  - Materials
T1  - Microstructural, Thermoelectric and Mechanical Properties of Cu Substituted NaCo2O4
SP  - 4470
VL  - 15
DO  - 10.3390/ma15134470
ER  - 

@article{
author = "Perać, Sanja and M.Savić, Slavica and Branković, Zorica and Bernik, Slavko and Radojković, Aleksandar and Kojić, Sanja and Vasiljević, Dragana and Branković, Goran",
year = "2022",
abstract = "Polycrystalline samples of NaCo2−xCuxO4 (x = 0, 0.01, 0.03, 0.05) were obtained from powder precursors synthesized by a mechanochemically assisted solid-state reaction method (MASSR) and a citric acid complex method (CAC). Ceramic samples were prepared by pressing into disc-shaped pellets and subsequently sintering at 880 °C in an argon atmosphere. Effects of low concentrations of Cu doping and the above-mentioned synthesis procedures on the thermoelectric and mechanical properties were observed. The electrical resistivity (ρ), the thermal conductivity (κ) and the Seebeck coefficient (S) were measured simultaneously in the temperature gradient (ΔT) between the hot and cold side of the sample, and the figure of merit (ZT) was subsequently calculated. The ZT of the CAC samples was higher compared with the MASSR samples. The highest ZT value of 0.061 at ΔT = 473 K was obtained for the sample with 5 mol% of Cu prepared by the CAC method. The CAC samples showed better mechanical properties compared to the MASSR samples due to the higher hardness of the CAC samples which is a consequence of homogeneous microstructure and higher density obtained during sintering of these samples. The results confirmed that, besides the concentration of Cu, the synthesis procedure considerably affected the thermoelectric and mechanical properties of NaCo2O4 (NCO) ceramics.",
publisher = "MDPI",
journal = "Materials",
title = "Microstructural, Thermoelectric and Mechanical Properties of Cu Substituted NaCo2O4",
pages = "4470",
volume = "15",
doi = "10.3390/ma15134470"
}

Perać, S., M.Savić, S., Branković, Z., Bernik, S., Radojković, A., Kojić, S., Vasiljević, D.,& Branković, G.. (2022). Microstructural, Thermoelectric and Mechanical Properties of Cu Substituted NaCo2O4. in Materials
MDPI., 15, 4470.
https://doi.org/10.3390/ma15134470

Perać S, M.Savić S, Branković Z, Bernik S, Radojković A, Kojić S, Vasiljević D, Branković G. Microstructural, Thermoelectric and Mechanical Properties of Cu Substituted NaCo2O4. in Materials. 2022;15:4470.
doi:10.3390/ma15134470 .

Perać, Sanja, M.Savić, Slavica, Branković, Zorica, Bernik, Slavko, Radojković, Aleksandar, Kojić, Sanja, Vasiljević, Dragana, Branković, Goran, "Microstructural, Thermoelectric and Mechanical Properties of Cu Substituted NaCo2O4" in Materials, 15 (2022):4470,
https://doi.org/10.3390/ma15134470 . .

TY  - JOUR
AU  - Mitrović, Jelena
AU  - Počuča-Nešić, Milica
AU  - Luković Golić, Danijela
AU  - Ribić, Vesna
AU  - Branković, Zorica
AU  - Savić, Slavica M.
AU  - Dapčević, Aleksandra
AU  - Bernik, Slavko
AU  - Podlogar, Matejka
AU  - Kocen, Matej
AU  - Rapljenović, Zeljko
AU  - Ivek, Tomislav
AU  - Lazović, Vladimir
AU  - Dojčinović, Biljana
AU  - Branković, Goran
PY  - 2020
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1363
AB  - Antimony doped barium-stannate dense ceramic materials were synthesized using spark plasma sintering technique out of mechanically activated precursor powders. The influence of various Sb concentrations (x = 0.00 - 0.10) on properties of BaSn1-xSbxO3 ceramics was investigated. Relative densities of prepared samples were in the range of (79-96) %. TEM analysis revealed the presence of many dislocations in undoped BaSnO3, and their significant reduction upon doping with Sb. All samples except BaSn0.92Sb0.08O3 exhibit non-linear I-U characteristic, typical for semiconductors with potential barrier at grain boundaries. Low angle grain boundaries found only in BaSn0.92Sb0.08O3 caused the loss of potential barrier at grain boundaries which was confirmed by AC impedance spectroscopy measurements. Consequently, BaSn0.92Sb0.08O3 showed the lowest electrical resistivity and linear I-U characteristic. UV-vis analysis confirmed the increasing of band gap (Burstein-Moss shift) values in all doped samples.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of the European Ceramic Society
T1  - The structural, electrical and optical properties of spark plasma sintered BaSn1-xSbxO3 ceramics
EP  - 5575
IS  - 15
SP  - 5566
VL  - 40
DO  - 10.1016/j.jeurceramsoc.2020.06.062
ER  - 

@article{
author = "Mitrović, Jelena and Počuča-Nešić, Milica and Luković Golić, Danijela and Ribić, Vesna and Branković, Zorica and Savić, Slavica M. and Dapčević, Aleksandra and Bernik, Slavko and Podlogar, Matejka and Kocen, Matej and Rapljenović, Zeljko and Ivek, Tomislav and Lazović, Vladimir and Dojčinović, Biljana and Branković, Goran",
year = "2020",
abstract = "Antimony doped barium-stannate dense ceramic materials were synthesized using spark plasma sintering technique out of mechanically activated precursor powders. The influence of various Sb concentrations (x = 0.00 - 0.10) on properties of BaSn1-xSbxO3 ceramics was investigated. Relative densities of prepared samples were in the range of (79-96) %. TEM analysis revealed the presence of many dislocations in undoped BaSnO3, and their significant reduction upon doping with Sb. All samples except BaSn0.92Sb0.08O3 exhibit non-linear I-U characteristic, typical for semiconductors with potential barrier at grain boundaries. Low angle grain boundaries found only in BaSn0.92Sb0.08O3 caused the loss of potential barrier at grain boundaries which was confirmed by AC impedance spectroscopy measurements. Consequently, BaSn0.92Sb0.08O3 showed the lowest electrical resistivity and linear I-U characteristic. UV-vis analysis confirmed the increasing of band gap (Burstein-Moss shift) values in all doped samples.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of the European Ceramic Society",
title = "The structural, electrical and optical properties of spark plasma sintered BaSn1-xSbxO3 ceramics",
pages = "5575-5566",
number = "15",
volume = "40",
doi = "10.1016/j.jeurceramsoc.2020.06.062"
}

Mitrović, J., Počuča-Nešić, M., Luković Golić, D., Ribić, V., Branković, Z., Savić, S. M., Dapčević, A., Bernik, S., Podlogar, M., Kocen, M., Rapljenović, Z., Ivek, T., Lazović, V., Dojčinović, B.,& Branković, G.. (2020). The structural, electrical and optical properties of spark plasma sintered BaSn1-xSbxO3 ceramics. in Journal of the European Ceramic Society
Elsevier Sci Ltd, Oxford., 40(15), 5566-5575.
https://doi.org/10.1016/j.jeurceramsoc.2020.06.062

Mitrović J, Počuča-Nešić M, Luković Golić D, Ribić V, Branković Z, Savić SM, Dapčević A, Bernik S, Podlogar M, Kocen M, Rapljenović Z, Ivek T, Lazović V, Dojčinović B, Branković G. The structural, electrical and optical properties of spark plasma sintered BaSn1-xSbxO3 ceramics. in Journal of the European Ceramic Society. 2020;40(15):5566-5575.
doi:10.1016/j.jeurceramsoc.2020.06.062 .

Mitrović, Jelena, Počuča-Nešić, Milica, Luković Golić, Danijela, Ribić, Vesna, Branković, Zorica, Savić, Slavica M., Dapčević, Aleksandra, Bernik, Slavko, Podlogar, Matejka, Kocen, Matej, Rapljenović, Zeljko, Ivek, Tomislav, Lazović, Vladimir, Dojčinović, Biljana, Branković, Goran, "The structural, electrical and optical properties of spark plasma sintered BaSn1-xSbxO3 ceramics" in Journal of the European Ceramic Society, 40, no. 15 (2020):5566-5575,
https://doi.org/10.1016/j.jeurceramsoc.2020.06.062 . .

TY  - JOUR
AU  - Počuča-Nešić, Milica
AU  - Marinković Stanojević, Zorica
AU  - Branković, Zorica
AU  - Cotic, P
AU  - Bernik, Slavko
AU  - Sousa, Goes M
AU  - Marinković, Bojan A
AU  - Varela, JA
AU  - Branković, Goran
PY  - 2013
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/737
AB  - Yttrium manganite (YMnO3) is a multiferroic material, which means that it exhibits both ferromagnetic and ferroelectric properties, so making it interesting for a variety of technological applications. In this work, single-phase YMnO3 was prepared for the first time by mechanochemical synthesis in a planetary ball mill. The YMnO3 was formed directly from the highly activated constituent oxides, Y2O3 and Mn2O3, after 60 min of milling time. During prolonged milling, the growth of the particles occurred. The cumulative energy introduced into the system during milling for 60 min was 86 kJ/g. The X-ray powder-diffraction analysis indicates that the as-prepared samples crystallize with an orthorhombic (Pnma) YMnO3 structure. The morphology and chemical composition of the powder were investigated by SEM and FESEM. The magnetic properties of the obtained YMnO3 powders were found to change as a function of the milling time in a manner consistent with the variation in the nanocomposite microstructure.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Alloys and Compounds
T1  - Mechanochemical synthesis of yttrium manganite
EP  - 456
SP  - 451
VL  - 552
DO  - 10.1016/j.jallcom.2012.11.031
ER  - 

@article{
author = "Počuča-Nešić, Milica and Marinković Stanojević, Zorica and Branković, Zorica and Cotic, P and Bernik, Slavko and Sousa, Goes M and Marinković, Bojan A and Varela, JA and Branković, Goran",
year = "2013",
abstract = "Yttrium manganite (YMnO3) is a multiferroic material, which means that it exhibits both ferromagnetic and ferroelectric properties, so making it interesting for a variety of technological applications. In this work, single-phase YMnO3 was prepared for the first time by mechanochemical synthesis in a planetary ball mill. The YMnO3 was formed directly from the highly activated constituent oxides, Y2O3 and Mn2O3, after 60 min of milling time. During prolonged milling, the growth of the particles occurred. The cumulative energy introduced into the system during milling for 60 min was 86 kJ/g. The X-ray powder-diffraction analysis indicates that the as-prepared samples crystallize with an orthorhombic (Pnma) YMnO3 structure. The morphology and chemical composition of the powder were investigated by SEM and FESEM. The magnetic properties of the obtained YMnO3 powders were found to change as a function of the milling time in a manner consistent with the variation in the nanocomposite microstructure.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Alloys and Compounds",
title = "Mechanochemical synthesis of yttrium manganite",
pages = "456-451",
volume = "552",
doi = "10.1016/j.jallcom.2012.11.031"
}

Počuča-Nešić, M., Marinković Stanojević, Z., Branković, Z., Cotic, P., Bernik, S., Sousa, G. M., Marinković, B. A., Varela, J.,& Branković, G.. (2013). Mechanochemical synthesis of yttrium manganite. in Journal of Alloys and Compounds
Elsevier Science Sa, Lausanne., 552, 451-456.
https://doi.org/10.1016/j.jallcom.2012.11.031

Počuča-Nešić M, Marinković Stanojević Z, Branković Z, Cotic P, Bernik S, Sousa GM, Marinković BA, Varela J, Branković G. Mechanochemical synthesis of yttrium manganite. in Journal of Alloys and Compounds. 2013;552:451-456.
doi:10.1016/j.jallcom.2012.11.031 .

Počuča-Nešić, Milica, Marinković Stanojević, Zorica, Branković, Zorica, Cotic, P, Bernik, Slavko, Sousa, Goes M, Marinković, Bojan A, Varela, JA, Branković, Goran, "Mechanochemical synthesis of yttrium manganite" in Journal of Alloys and Compounds, 552 (2013):451-456,
https://doi.org/10.1016/j.jallcom.2012.11.031 . .

TY  - JOUR
AU  - Luković Golić, Danijela
AU  - Branković, Zorica
AU  - Daneu, Nina
AU  - Bernik, Slavko
AU  - Branković, Goran
PY  - 2012
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/562
AB  - Zinc oxide powders with different morphologies and grain sizes were synthesized using solvothermal methods from ethanolic zinc acetate solutions in the presence of lithium hydroxide. The influence of the temperature and the time of the reaction, as well as the pH value of the starting solution, on the ZnO particle size and morphology were examined. It was found that an increase in the pH value from 8 to 12 results in a significant decrease in the mean particle size. Also, the particles' morphology can be changed from hexagonal plates and prisms to rods by controlling the reaction time and the temperature. The crystallization mechanism is discussed, based on established correlations such as the particle size/shape versus the reaction parameters. Dissolution/recrystallisation is the most probable growth mechanism responsible for the ZnO particles' morphology obtained in the solvothermal (hydrothermal) reactions with a basic solution. The planar structure of the zinc-hydroxy-acetate molecule plays the main role in growing the structures during the sovothermal reactions with a slightly acid solution.
PB  - Springer, Dordrecht
T2  - Journal of Sol-Gel Science and Technology
T1  - Solvothermal syntheses of nano- and micro-sized ZnO powders with a controllable morphology
EP  - 125
IS  - 1
SP  - 116
VL  - 63
DO  - 10.1007/s10971-012-2773-z
ER  - 

@article{
author = "Luković Golić, Danijela and Branković, Zorica and Daneu, Nina and Bernik, Slavko and Branković, Goran",
year = "2012",
abstract = "Zinc oxide powders with different morphologies and grain sizes were synthesized using solvothermal methods from ethanolic zinc acetate solutions in the presence of lithium hydroxide. The influence of the temperature and the time of the reaction, as well as the pH value of the starting solution, on the ZnO particle size and morphology were examined. It was found that an increase in the pH value from 8 to 12 results in a significant decrease in the mean particle size. Also, the particles' morphology can be changed from hexagonal plates and prisms to rods by controlling the reaction time and the temperature. The crystallization mechanism is discussed, based on established correlations such as the particle size/shape versus the reaction parameters. Dissolution/recrystallisation is the most probable growth mechanism responsible for the ZnO particles' morphology obtained in the solvothermal (hydrothermal) reactions with a basic solution. The planar structure of the zinc-hydroxy-acetate molecule plays the main role in growing the structures during the sovothermal reactions with a slightly acid solution.",
publisher = "Springer, Dordrecht",
journal = "Journal of Sol-Gel Science and Technology",
title = "Solvothermal syntheses of nano- and micro-sized ZnO powders with a controllable morphology",
pages = "125-116",
number = "1",
volume = "63",
doi = "10.1007/s10971-012-2773-z"
}

Luković Golić, D., Branković, Z., Daneu, N., Bernik, S.,& Branković, G.. (2012). Solvothermal syntheses of nano- and micro-sized ZnO powders with a controllable morphology. in Journal of Sol-Gel Science and Technology
Springer, Dordrecht., 63(1), 116-125.
https://doi.org/10.1007/s10971-012-2773-z

Luković Golić D, Branković Z, Daneu N, Bernik S, Branković G. Solvothermal syntheses of nano- and micro-sized ZnO powders with a controllable morphology. in Journal of Sol-Gel Science and Technology. 2012;63(1):116-125.
doi:10.1007/s10971-012-2773-z .

Luković Golić, Danijela, Branković, Zorica, Daneu, Nina, Bernik, Slavko, Branković, Goran, "Solvothermal syntheses of nano- and micro-sized ZnO powders with a controllable morphology" in Journal of Sol-Gel Science and Technology, 63, no. 1 (2012):116-125,
https://doi.org/10.1007/s10971-012-2773-z . .

TY  - JOUR
AU  - Luković Golić, Danijela
AU  - Branković, Goran
AU  - Počuča-Nešić, Milica
AU  - Vojisavljević, Katarina
AU  - Recnik, Aleksander
AU  - Daneu, Nina
AU  - Bernik, Slavko
AU  - Šćepanović, Maja
AU  - Poleti, Dejan
AU  - Branković, Zorica
PY  - 2011
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/469
AB  - Zinc oxide nanopowders were synthesized by the sol-gel method from an ethanol solution of zinc acetate dihydrate. Detailed structural and microstructural investigations were carried out using x-ray diffraction, Raman spectroscopy, thermogravimetric and differential thermal analyses, as well as high-resolution transmission electron microscopy (TEM) and field-emission scanning electron microscopy. The intermediate compound of the reaction was layered zinc hydroxide acetate that further transforms into hexagonally shaped ZnO crystalline nanoplates (d(m) = 4 nm), which aggregate into larger spherical particles. According to the TEM analysis the ZnO nanoparticles were self-assembled into larger particles with the same orientation, i.e. aligned lattice planes of the particles. A further solvothermal treatment resulted in hexagonal, prismatic ZnO mesocrystals.
PB  - IOP Publishing Ltd, Bristol
T2  - Nanotechnology
T1  - Structural characterization of self-assembled ZnO nanoparticles obtained by the sol-gel method from Zn(CH3COO)(2)center dot 2H(2)O
IS  - 39
VL  - 22
DO  - 10.1088/0957-4484/22/39/395603
ER  - 

@article{
author = "Luković Golić, Danijela and Branković, Goran and Počuča-Nešić, Milica and Vojisavljević, Katarina and Recnik, Aleksander and Daneu, Nina and Bernik, Slavko and Šćepanović, Maja and Poleti, Dejan and Branković, Zorica",
year = "2011",
abstract = "Zinc oxide nanopowders were synthesized by the sol-gel method from an ethanol solution of zinc acetate dihydrate. Detailed structural and microstructural investigations were carried out using x-ray diffraction, Raman spectroscopy, thermogravimetric and differential thermal analyses, as well as high-resolution transmission electron microscopy (TEM) and field-emission scanning electron microscopy. The intermediate compound of the reaction was layered zinc hydroxide acetate that further transforms into hexagonally shaped ZnO crystalline nanoplates (d(m) = 4 nm), which aggregate into larger spherical particles. According to the TEM analysis the ZnO nanoparticles were self-assembled into larger particles with the same orientation, i.e. aligned lattice planes of the particles. A further solvothermal treatment resulted in hexagonal, prismatic ZnO mesocrystals.",
publisher = "IOP Publishing Ltd, Bristol",
journal = "Nanotechnology",
title = "Structural characterization of self-assembled ZnO nanoparticles obtained by the sol-gel method from Zn(CH3COO)(2)center dot 2H(2)O",
number = "39",
volume = "22",
doi = "10.1088/0957-4484/22/39/395603"
}

Luković Golić, D., Branković, G., Počuča-Nešić, M., Vojisavljević, K., Recnik, A., Daneu, N., Bernik, S., Šćepanović, M., Poleti, D.,& Branković, Z.. (2011). Structural characterization of self-assembled ZnO nanoparticles obtained by the sol-gel method from Zn(CH3COO)(2)center dot 2H(2)O. in Nanotechnology
IOP Publishing Ltd, Bristol., 22(39).
https://doi.org/10.1088/0957-4484/22/39/395603

Luković Golić D, Branković G, Počuča-Nešić M, Vojisavljević K, Recnik A, Daneu N, Bernik S, Šćepanović M, Poleti D, Branković Z. Structural characterization of self-assembled ZnO nanoparticles obtained by the sol-gel method from Zn(CH3COO)(2)center dot 2H(2)O. in Nanotechnology. 2011;22(39).
doi:10.1088/0957-4484/22/39/395603 .

Luković Golić, Danijela, Branković, Goran, Počuča-Nešić, Milica, Vojisavljević, Katarina, Recnik, Aleksander, Daneu, Nina, Bernik, Slavko, Šćepanović, Maja, Poleti, Dejan, Branković, Zorica, "Structural characterization of self-assembled ZnO nanoparticles obtained by the sol-gel method from Zn(CH3COO)(2)center dot 2H(2)O" in Nanotechnology, 22, no. 39 (2011),
https://doi.org/10.1088/0957-4484/22/39/395603 . .

TY  - JOUR
AU  - Marinković Stanojević, Zorica
AU  - Branković, Zorica
AU  - Jaglicic, Zvonko
AU  - Jagodic, M
AU  - Mančić, Lidija T
AU  - Bernik, Slavko
AU  - Recnik, Aleksander
AU  - Branković, Goran
PY  - 2011
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/463
AB  - We have studied the formation of BiMnO3 (BMO) nanocrystalline perovskite powder produced by high-energy milling of the constituent oxides. The crystal structure and the amount of crystalline and amorphous phases in the powder as a function of the milling time were determined with XRPD using Rietveld refinement. BMO perovskite formed directly from highly activated nano-sized constituent oxides after 240 min of milling and subsequently grew during prolonged milling. The morphology, structure, and chemical composition of the powder were investigated by SEM and TEM. A clear ferromagnetic transition was observed at T (C) similar to 66 K for a sample milled for 240 min and increased with milling time. The magnetic hysteresis behavior is similar to that of a soft ferromagnet. The magnetic properties of the obtained BMO powders were found to change as a function of milling time in a manner consistent with variations in the nanocomposite microstructure.
PB  - Springer, Dordrecht
T2  - Journal of Nanoparticle Research
T1  - Structural and magnetic properties of nanocrystalline bismuth manganite obtained by mechanochemical synthesis
EP  - 3439
IS  - 8
SP  - 3431
VL  - 13
DO  - 10.1007/s11051-011-0265-7
ER  - 

@article{
author = "Marinković Stanojević, Zorica and Branković, Zorica and Jaglicic, Zvonko and Jagodic, M and Mančić, Lidija T and Bernik, Slavko and Recnik, Aleksander and Branković, Goran",
year = "2011",
abstract = "We have studied the formation of BiMnO3 (BMO) nanocrystalline perovskite powder produced by high-energy milling of the constituent oxides. The crystal structure and the amount of crystalline and amorphous phases in the powder as a function of the milling time were determined with XRPD using Rietveld refinement. BMO perovskite formed directly from highly activated nano-sized constituent oxides after 240 min of milling and subsequently grew during prolonged milling. The morphology, structure, and chemical composition of the powder were investigated by SEM and TEM. A clear ferromagnetic transition was observed at T (C) similar to 66 K for a sample milled for 240 min and increased with milling time. The magnetic hysteresis behavior is similar to that of a soft ferromagnet. The magnetic properties of the obtained BMO powders were found to change as a function of milling time in a manner consistent with variations in the nanocomposite microstructure.",
publisher = "Springer, Dordrecht",
journal = "Journal of Nanoparticle Research",
title = "Structural and magnetic properties of nanocrystalline bismuth manganite obtained by mechanochemical synthesis",
pages = "3439-3431",
number = "8",
volume = "13",
doi = "10.1007/s11051-011-0265-7"
}

Marinković Stanojević, Z., Branković, Z., Jaglicic, Z., Jagodic, M., Mančić, L. T., Bernik, S., Recnik, A.,& Branković, G.. (2011). Structural and magnetic properties of nanocrystalline bismuth manganite obtained by mechanochemical synthesis. in Journal of Nanoparticle Research
Springer, Dordrecht., 13(8), 3431-3439.
https://doi.org/10.1007/s11051-011-0265-7

Marinković Stanojević Z, Branković Z, Jaglicic Z, Jagodic M, Mančić LT, Bernik S, Recnik A, Branković G. Structural and magnetic properties of nanocrystalline bismuth manganite obtained by mechanochemical synthesis. in Journal of Nanoparticle Research. 2011;13(8):3431-3439.
doi:10.1007/s11051-011-0265-7 .

Marinković Stanojević, Zorica, Branković, Zorica, Jaglicic, Zvonko, Jagodic, M, Mančić, Lidija T, Bernik, Slavko, Recnik, Aleksander, Branković, Goran, "Structural and magnetic properties of nanocrystalline bismuth manganite obtained by mechanochemical synthesis" in Journal of Nanoparticle Research, 13, no. 8 (2011):3431-3439,
https://doi.org/10.1007/s11051-011-0265-7 . .

TY  - JOUR
AU  - Šćepanović, Maja
AU  - Grujic-Brojcin, Mirjana U
AU  - Vojisavljević, Katarina
AU  - Bernik, Slavko
AU  - Srećković, Tatjana
PY  - 2010
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/389
AB  - Raman scattering spectroscopy has been used for the characterization of zinc oxide nanoparticles obtained by mechanical activation in a high-energy vibro-mill and planetary ball mill. Raman modes observed in spectra of nonactivated sample are assigned to Raman spectra of the ZnO monocrystal, while the spectra of mechanically activated samples point out to the structural and stoichiometric changes, depending on the milling time and the choice of equipment. Observed redshift and peak broadening of the E2(high) and E1 (LO) first-order Raman modes are attributed to increased disorder induced by mechanical milling, followed by the effects of phonon confinement due to correlation length decrease. The additional modes identified in Raman spectra of activated ZnO samples are related to the surface optical phonon modes, due to the intrinsic surface defects and presence of ZrO(2)as extrinsic defects introduced by milling in zirconia vials.
PB  - John Wiley & Sons Ltd, Chichester
T2  - Journal of Raman Spectroscopy
T1  - Raman study of structural disorder in ZnO nanopowders
EP  - 921
IS  - 9
SP  - 914
VL  - 41
DO  - 10.1002/jrs.2546
ER  - 

@article{
author = "Šćepanović, Maja and Grujic-Brojcin, Mirjana U and Vojisavljević, Katarina and Bernik, Slavko and Srećković, Tatjana",
year = "2010",
abstract = "Raman scattering spectroscopy has been used for the characterization of zinc oxide nanoparticles obtained by mechanical activation in a high-energy vibro-mill and planetary ball mill. Raman modes observed in spectra of nonactivated sample are assigned to Raman spectra of the ZnO monocrystal, while the spectra of mechanically activated samples point out to the structural and stoichiometric changes, depending on the milling time and the choice of equipment. Observed redshift and peak broadening of the E2(high) and E1 (LO) first-order Raman modes are attributed to increased disorder induced by mechanical milling, followed by the effects of phonon confinement due to correlation length decrease. The additional modes identified in Raman spectra of activated ZnO samples are related to the surface optical phonon modes, due to the intrinsic surface defects and presence of ZrO(2)as extrinsic defects introduced by milling in zirconia vials.",
publisher = "John Wiley & Sons Ltd, Chichester",
journal = "Journal of Raman Spectroscopy",
title = "Raman study of structural disorder in ZnO nanopowders",
pages = "921-914",
number = "9",
volume = "41",
doi = "10.1002/jrs.2546"
}

Šćepanović, M., Grujic-Brojcin, M. U., Vojisavljević, K., Bernik, S.,& Srećković, T.. (2010). Raman study of structural disorder in ZnO nanopowders. in Journal of Raman Spectroscopy
John Wiley & Sons Ltd, Chichester., 41(9), 914-921.
https://doi.org/10.1002/jrs.2546

Šćepanović M, Grujic-Brojcin MU, Vojisavljević K, Bernik S, Srećković T. Raman study of structural disorder in ZnO nanopowders. in Journal of Raman Spectroscopy. 2010;41(9):914-921.
doi:10.1002/jrs.2546 .

Šćepanović, Maja, Grujic-Brojcin, Mirjana U, Vojisavljević, Katarina, Bernik, Slavko, Srećković, Tatjana, "Raman study of structural disorder in ZnO nanopowders" in Journal of Raman Spectroscopy, 41, no. 9 (2010):914-921,
https://doi.org/10.1002/jrs.2546 . .

TY  - JOUR
AU  - Branković, Zorica
AU  - Djuris, Katarina
AU  - Radojković, Aleksandar
AU  - Bernik, Slavko
AU  - Jaglicic, Zvonko
AU  - Jagodic, M
AU  - Vojisavljević, Katarina
AU  - Branković, Goran
PY  - 2010
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/378
AB  - Substituted lanthanum manganites with the general formula A(1-x) B (x) MnO3 (A = La, B = Ca, SraEuro broken vertical bar) have attracted a lot of attention due to their exceptional electric and magnetic properties. In this work, pure and Ca2+, Sr2+-doped LaMnO3 (LMO) with the concentrations of dopants 30% Ca2+ (LCMO), 30% Sr2+ (LSMO) and 15% Ca2+ + 15% Sr2+ (LCSMO) (in mol. %) were synthesized by polymerizable complex method. Bulk samples were prepared by sintering at 1300 A degrees C for 4 h in oxygen atmosphere. It was found that sintering in oxygen atmosphere enables preparation of single phase ceramics with rhombohedral crystal structure. Chemically prepared fine, submicronic precursor powders provided uniform microstructure and grain size distribution in final ceramics. As a result, pure and doped LMO ceramics with excellent microstructural and magnetic properties were obtained. Depending on the composition, magnetic measurements showed high saturation magnetizations (up to 93 emu/g), with values of the Curie temperature in the range 180-390 K and magnetoresistance up to 67%.
PB  - Springer, Dordrecht
T2  - Journal of Sol-Gel Science and Technology
T1  - Magnetic properties of doped LaMnO3 ceramics obtained by a polymerizable complex method
EP  - 316
IS  - 3
SP  - 311
VL  - 55
DO  - 10.1007/s10971-010-2251-4
ER  - 

@article{
author = "Branković, Zorica and Djuris, Katarina and Radojković, Aleksandar and Bernik, Slavko and Jaglicic, Zvonko and Jagodic, M and Vojisavljević, Katarina and Branković, Goran",
year = "2010",
abstract = "Substituted lanthanum manganites with the general formula A(1-x) B (x) MnO3 (A = La, B = Ca, SraEuro broken vertical bar) have attracted a lot of attention due to their exceptional electric and magnetic properties. In this work, pure and Ca2+, Sr2+-doped LaMnO3 (LMO) with the concentrations of dopants 30% Ca2+ (LCMO), 30% Sr2+ (LSMO) and 15% Ca2+ + 15% Sr2+ (LCSMO) (in mol. %) were synthesized by polymerizable complex method. Bulk samples were prepared by sintering at 1300 A degrees C for 4 h in oxygen atmosphere. It was found that sintering in oxygen atmosphere enables preparation of single phase ceramics with rhombohedral crystal structure. Chemically prepared fine, submicronic precursor powders provided uniform microstructure and grain size distribution in final ceramics. As a result, pure and doped LMO ceramics with excellent microstructural and magnetic properties were obtained. Depending on the composition, magnetic measurements showed high saturation magnetizations (up to 93 emu/g), with values of the Curie temperature in the range 180-390 K and magnetoresistance up to 67%.",
publisher = "Springer, Dordrecht",
journal = "Journal of Sol-Gel Science and Technology",
title = "Magnetic properties of doped LaMnO3 ceramics obtained by a polymerizable complex method",
pages = "316-311",
number = "3",
volume = "55",
doi = "10.1007/s10971-010-2251-4"
}

Branković, Z., Djuris, K., Radojković, A., Bernik, S., Jaglicic, Z., Jagodic, M., Vojisavljević, K.,& Branković, G.. (2010). Magnetic properties of doped LaMnO3 ceramics obtained by a polymerizable complex method. in Journal of Sol-Gel Science and Technology
Springer, Dordrecht., 55(3), 311-316.
https://doi.org/10.1007/s10971-010-2251-4

Branković Z, Djuris K, Radojković A, Bernik S, Jaglicic Z, Jagodic M, Vojisavljević K, Branković G. Magnetic properties of doped LaMnO3 ceramics obtained by a polymerizable complex method. in Journal of Sol-Gel Science and Technology. 2010;55(3):311-316.
doi:10.1007/s10971-010-2251-4 .

Branković, Zorica, Djuris, Katarina, Radojković, Aleksandar, Bernik, Slavko, Jaglicic, Zvonko, Jagodic, M, Vojisavljević, Katarina, Branković, Goran, "Magnetic properties of doped LaMnO3 ceramics obtained by a polymerizable complex method" in Journal of Sol-Gel Science and Technology, 55, no. 3 (2010):311-316,
https://doi.org/10.1007/s10971-010-2251-4 . .

TY  - JOUR
AU  - Branković, Zorica
AU  - Marinković Stanojević, Zorica
AU  - Mančić, Lidija T
AU  - Vukotić, Vesna M
AU  - Bernik, Slavko
AU  - Branković, Goran
PY  - 2010
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/412
AB  - Multiferroic bismuth manganite (BiMnO3) is known as a material that exhibits both ferromagnetic and ferroelectric properties making it interesting for various technological applications. Unfortunately, preparation of BiMnO3 is not possible by a conventional solid-state reaction and it can form only from mixture of oxides at high pressures (>40 kbar). In this work single-phased BiMnO3 was prepared for the first time by mechanochemical synthesis in a planetary ball mill. A mixture of Bi2O3 and Mn2O3 was intensively milled in air atmosphere, using stainless steel vials and balls. According to analysis of XPRD results BiMnO3 obtained after milling for 240 min has a tetragonal structure with lattice parameters a = 3.9230 angstrom, c = 3.920 angstrom and a crystallite size of 16.8 nm. The cumulative energy introduced into the system during milling for 240 min was 401 kJ/g. It was found that the obtained powders were agglomerated. Corresponding agglomeration factors were calculated from the results of BET and particle size distribution analysis.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of the European Ceramic Society
T1  - Multiferroic bismuth manganite prepared by mechanochemical synthesis
EP  - 281
IS  - 2
SP  - 277
VL  - 30
DO  - 10.1016/j.jeurceramsoc.2009.06.030
ER  - 

@article{
author = "Branković, Zorica and Marinković Stanojević, Zorica and Mančić, Lidija T and Vukotić, Vesna M and Bernik, Slavko and Branković, Goran",
year = "2010",
abstract = "Multiferroic bismuth manganite (BiMnO3) is known as a material that exhibits both ferromagnetic and ferroelectric properties making it interesting for various technological applications. Unfortunately, preparation of BiMnO3 is not possible by a conventional solid-state reaction and it can form only from mixture of oxides at high pressures (>40 kbar). In this work single-phased BiMnO3 was prepared for the first time by mechanochemical synthesis in a planetary ball mill. A mixture of Bi2O3 and Mn2O3 was intensively milled in air atmosphere, using stainless steel vials and balls. According to analysis of XPRD results BiMnO3 obtained after milling for 240 min has a tetragonal structure with lattice parameters a = 3.9230 angstrom, c = 3.920 angstrom and a crystallite size of 16.8 nm. The cumulative energy introduced into the system during milling for 240 min was 401 kJ/g. It was found that the obtained powders were agglomerated. Corresponding agglomeration factors were calculated from the results of BET and particle size distribution analysis.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of the European Ceramic Society",
title = "Multiferroic bismuth manganite prepared by mechanochemical synthesis",
pages = "281-277",
number = "2",
volume = "30",
doi = "10.1016/j.jeurceramsoc.2009.06.030"
}

Branković, Z., Marinković Stanojević, Z., Mančić, L. T., Vukotić, V. M., Bernik, S.,& Branković, G.. (2010). Multiferroic bismuth manganite prepared by mechanochemical synthesis. in Journal of the European Ceramic Society
Elsevier Sci Ltd, Oxford., 30(2), 277-281.
https://doi.org/10.1016/j.jeurceramsoc.2009.06.030

Branković Z, Marinković Stanojević Z, Mančić LT, Vukotić VM, Bernik S, Branković G. Multiferroic bismuth manganite prepared by mechanochemical synthesis. in Journal of the European Ceramic Society. 2010;30(2):277-281.
doi:10.1016/j.jeurceramsoc.2009.06.030 .

Branković, Zorica, Marinković Stanojević, Zorica, Mančić, Lidija T, Vukotić, Vesna M, Bernik, Slavko, Branković, Goran, "Multiferroic bismuth manganite prepared by mechanochemical synthesis" in Journal of the European Ceramic Society, 30, no. 2 (2010):277-281,
https://doi.org/10.1016/j.jeurceramsoc.2009.06.030 . .

TY  - JOUR
AU  - Jović, Vladimir D
AU  - Jović, Borka M
AU  - Lačnjevac, Uroš
AU  - Branković, Goran
AU  - Bernik, Slavko
AU  - Recnik, Aleksander
PY  - 2010
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/400
AB  - The Mo-Ni-O powders were electrodeposited from ammonium sulfate containing electrolytes with different Mo/Ni ion concentration ratios. The phase composition of these powders was investigated using TEM. EDS and XRD analysis. The TEM analysis showed that two types of particles were present in the powders: amorphous and crystalline. For crystalline particles it was found that two phases, MoO3 and MoNi4 prevail in all powders, while the NiO phase was detected in the powder electrodeposited at Mo/Ni = 0.3/1. These findings are in good agreement with our previous results where MoO3, MoNi4 and NiMoO4 phases were detected in the recrystallized Mo-Ni-O powders. In this work we discovered that the NiMoO4 phase was formed by solid state reaction between NiO and MoO3 at elevated temperature.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Electrochimica Acta
T1  - An attempt to predict the mechanism of Mo-Ni-O powders electrodeposition from the results of their TEM analysis
EP  - 4193
IS  - 13
SP  - 4188
VL  - 55
DO  - 10.1016/j.electacta.2010.02.065
ER  - 

@article{
author = "Jović, Vladimir D and Jović, Borka M and Lačnjevac, Uroš and Branković, Goran and Bernik, Slavko and Recnik, Aleksander",
year = "2010",
abstract = "The Mo-Ni-O powders were electrodeposited from ammonium sulfate containing electrolytes with different Mo/Ni ion concentration ratios. The phase composition of these powders was investigated using TEM. EDS and XRD analysis. The TEM analysis showed that two types of particles were present in the powders: amorphous and crystalline. For crystalline particles it was found that two phases, MoO3 and MoNi4 prevail in all powders, while the NiO phase was detected in the powder electrodeposited at Mo/Ni = 0.3/1. These findings are in good agreement with our previous results where MoO3, MoNi4 and NiMoO4 phases were detected in the recrystallized Mo-Ni-O powders. In this work we discovered that the NiMoO4 phase was formed by solid state reaction between NiO and MoO3 at elevated temperature.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Electrochimica Acta",
title = "An attempt to predict the mechanism of Mo-Ni-O powders electrodeposition from the results of their TEM analysis",
pages = "4193-4188",
number = "13",
volume = "55",
doi = "10.1016/j.electacta.2010.02.065"
}

Jović, V. D., Jović, B. M., Lačnjevac, U., Branković, G., Bernik, S.,& Recnik, A.. (2010). An attempt to predict the mechanism of Mo-Ni-O powders electrodeposition from the results of their TEM analysis. in Electrochimica Acta
Pergamon-Elsevier Science Ltd, Oxford., 55(13), 4188-4193.
https://doi.org/10.1016/j.electacta.2010.02.065

Jović VD, Jović BM, Lačnjevac U, Branković G, Bernik S, Recnik A. An attempt to predict the mechanism of Mo-Ni-O powders electrodeposition from the results of their TEM analysis. in Electrochimica Acta. 2010;55(13):4188-4193.
doi:10.1016/j.electacta.2010.02.065 .

Jović, Vladimir D, Jović, Borka M, Lačnjevac, Uroš, Branković, Goran, Bernik, Slavko, Recnik, Aleksander, "An attempt to predict the mechanism of Mo-Ni-O powders electrodeposition from the results of their TEM analysis" in Electrochimica Acta, 55, no. 13 (2010):4188-4193,
https://doi.org/10.1016/j.electacta.2010.02.065 . .

TY  - JOUR
AU  - Bernik, Slavko
AU  - Branković, Goran
AU  - Rustja, S.
AU  - Žunić, Milan
AU  - Podlogar, Matejka
AU  - Branković, Zorica
PY  - 2008
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/245
AB  - ZnO-based varistor samples were prepared by the direct mixing of the constituent phases (DMCP) and sintering at 1100 degrees C for 2 h. The influence of the starting powder mixture's composition - the amounts of the pre-reacted varistor compounds and their composition - and its preparation, either with or without mechano-chemical activation (MCA), on the microstructure, phase composition and electrical characteristics of the varistor samples was studied. It showed that MCA improved the density and microstructural homogeneity of the varistor samples. MCA strongly affected the grain growth: it enhanced the nucleation of inversion boundaries (IBs) in the ZnO grains and the IBs-induced grain-growth mechanism resulted in uniform grain growth and hence a microstructure with smaller ZnO grains and a narrower grain size distribution. The final phase composition of the samples prepared by the DMCP method mainly depended on the presence of varistor dopants that can prevent the formation of the pyrochlore phase, especially Cr2O3, while MCA can affect it mostly by providing a homogeneous distribution of those dopants. The DMCP varistor samples prepared with MCA had much better Current-voltage characteristics than the samples of the same composition prepared from unactivated powders.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Microstructural and compositional aspects of ZnO-based varistor ceramics prepared by direct mixing of the constituent phases and high-energy milling
EP  - 1502
IS  - 6
SP  - 1495
VL  - 34
DO  - 10.1016/j.ceramint.2007.04.003
ER  - 

@article{
author = "Bernik, Slavko and Branković, Goran and Rustja, S. and Žunić, Milan and Podlogar, Matejka and Branković, Zorica",
year = "2008",
abstract = "ZnO-based varistor samples were prepared by the direct mixing of the constituent phases (DMCP) and sintering at 1100 degrees C for 2 h. The influence of the starting powder mixture's composition - the amounts of the pre-reacted varistor compounds and their composition - and its preparation, either with or without mechano-chemical activation (MCA), on the microstructure, phase composition and electrical characteristics of the varistor samples was studied. It showed that MCA improved the density and microstructural homogeneity of the varistor samples. MCA strongly affected the grain growth: it enhanced the nucleation of inversion boundaries (IBs) in the ZnO grains and the IBs-induced grain-growth mechanism resulted in uniform grain growth and hence a microstructure with smaller ZnO grains and a narrower grain size distribution. The final phase composition of the samples prepared by the DMCP method mainly depended on the presence of varistor dopants that can prevent the formation of the pyrochlore phase, especially Cr2O3, while MCA can affect it mostly by providing a homogeneous distribution of those dopants. The DMCP varistor samples prepared with MCA had much better Current-voltage characteristics than the samples of the same composition prepared from unactivated powders.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Microstructural and compositional aspects of ZnO-based varistor ceramics prepared by direct mixing of the constituent phases and high-energy milling",
pages = "1502-1495",
number = "6",
volume = "34",
doi = "10.1016/j.ceramint.2007.04.003"
}

Bernik, S., Branković, G., Rustja, S., Žunić, M., Podlogar, M.,& Branković, Z.. (2008). Microstructural and compositional aspects of ZnO-based varistor ceramics prepared by direct mixing of the constituent phases and high-energy milling. in Ceramics International
Elsevier Sci Ltd, Oxford., 34(6), 1495-1502.
https://doi.org/10.1016/j.ceramint.2007.04.003

Bernik S, Branković G, Rustja S, Žunić M, Podlogar M, Branković Z. Microstructural and compositional aspects of ZnO-based varistor ceramics prepared by direct mixing of the constituent phases and high-energy milling. in Ceramics International. 2008;34(6):1495-1502.
doi:10.1016/j.ceramint.2007.04.003 .

Bernik, Slavko, Branković, Goran, Rustja, S., Žunić, Milan, Podlogar, Matejka, Branković, Zorica, "Microstructural and compositional aspects of ZnO-based varistor ceramics prepared by direct mixing of the constituent phases and high-energy milling" in Ceramics International, 34, no. 6 (2008):1495-1502,
https://doi.org/10.1016/j.ceramint.2007.04.003 . .

TY  - JOUR
AU  - Srećković, Tatjana
AU  - Bernik, Slavko
AU  - Ceh, M.
AU  - Vojisavljević, Katarina
PY  - 2008
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/301
AB  - In this paper, changes of microstructural characteristics of disperse systems during mechanical activation of zinc oxide (ZnO) have been investigated. ZnO powder was activated by grinding in a planetary ball mill in a continuous regime in air during 300 min at the basic disc rotation speed of 320 rpm and rotation speed of bowls of 400 rpm but with various balls-to-powder mass ratios. During ball milling in a planetary ball mill, initial ZnO powder suffered high-energy impacts. These impacts are very strong, and large amounts of microstructural and structural defects were introduced in the milled powders. The morphology and dispersivity of particles and agglomerates of all powders were investigated by scanning electron microscopy and scanning transmission electron microscopy. The specific surface area of initial ZnO powder was determined as 3.60 m(2) g(-1) and it increased to 4.42 m(2) g(-1) in mechanically activated powders. An increase of the ball-to-powder mass ratio led to a decrease of particle dimensions as well as increased the tendency for joining into quite compact agglomerates, that is aggregates, compared with the very loose, soft initial agglomerates. The obtained results pointed out that activation of ZnO powders produces a highly disperse, nano-scaled mixture of small particles, that is crystallites with sizes in the range of 10-40 nm. Most of these particles are in the form of aggregates with dimensions of 0.3-0.1 mu m. The crystallite and aggregate size strongly depend on milling conditions, that is ball-to-powder mass ratio, as shown in this investigation.
PB  - Wiley, Hoboken
T2  - Journal of Microscopy
T1  - Microstructural characterization of mechanicallyactivated ZnO powders
EP  - 642
IS  - 3
SP  - 639
VL  - 232
DO  - 10.1111/j.1365-2818.2008.02131.x
ER  - 

@article{
author = "Srećković, Tatjana and Bernik, Slavko and Ceh, M. and Vojisavljević, Katarina",
year = "2008",
abstract = "In this paper, changes of microstructural characteristics of disperse systems during mechanical activation of zinc oxide (ZnO) have been investigated. ZnO powder was activated by grinding in a planetary ball mill in a continuous regime in air during 300 min at the basic disc rotation speed of 320 rpm and rotation speed of bowls of 400 rpm but with various balls-to-powder mass ratios. During ball milling in a planetary ball mill, initial ZnO powder suffered high-energy impacts. These impacts are very strong, and large amounts of microstructural and structural defects were introduced in the milled powders. The morphology and dispersivity of particles and agglomerates of all powders were investigated by scanning electron microscopy and scanning transmission electron microscopy. The specific surface area of initial ZnO powder was determined as 3.60 m(2) g(-1) and it increased to 4.42 m(2) g(-1) in mechanically activated powders. An increase of the ball-to-powder mass ratio led to a decrease of particle dimensions as well as increased the tendency for joining into quite compact agglomerates, that is aggregates, compared with the very loose, soft initial agglomerates. The obtained results pointed out that activation of ZnO powders produces a highly disperse, nano-scaled mixture of small particles, that is crystallites with sizes in the range of 10-40 nm. Most of these particles are in the form of aggregates with dimensions of 0.3-0.1 mu m. The crystallite and aggregate size strongly depend on milling conditions, that is ball-to-powder mass ratio, as shown in this investigation.",
publisher = "Wiley, Hoboken",
journal = "Journal of Microscopy",
title = "Microstructural characterization of mechanicallyactivated ZnO powders",
pages = "642-639",
number = "3",
volume = "232",
doi = "10.1111/j.1365-2818.2008.02131.x"
}

Srećković, T., Bernik, S., Ceh, M.,& Vojisavljević, K.. (2008). Microstructural characterization of mechanicallyactivated ZnO powders. in Journal of Microscopy
Wiley, Hoboken., 232(3), 639-642.
https://doi.org/10.1111/j.1365-2818.2008.02131.x

Srećković T, Bernik S, Ceh M, Vojisavljević K. Microstructural characterization of mechanicallyactivated ZnO powders. in Journal of Microscopy. 2008;232(3):639-642.
doi:10.1111/j.1365-2818.2008.02131.x .

Srećković, Tatjana, Bernik, Slavko, Ceh, M., Vojisavljević, Katarina, "Microstructural characterization of mechanicallyactivated ZnO powders" in Journal of Microscopy, 232, no. 3 (2008):639-642,
https://doi.org/10.1111/j.1365-2818.2008.02131.x . .

TY  - JOUR
AU  - Krkljus, Ivana
AU  - Branković, Zorica
AU  - Duris, Katarina
AU  - Vukotić, Vesna M
AU  - Branković, Goran
AU  - Bernik, Slavko
PY  - 2008
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/240
AB  - The purpose of this research was to obtain porous, high-quality cathodes for solid oxide fuel cells in both planar and tubular shapes. To accomplish this, cathodic electrophoretic deposition of the LaMnO3 powder (synthesized by the modified sol-gel method proposed by Pechini) was performed. The optimal sintering temperatures were 1200 degrees C and 1300 degrees C for the tubular and planar configurations, respectively. Single-phase deposits with about 40% porosity were obtained in both configurations. The cathode quality was confirmed by depositing an electrolyte layer of YSZ. After the cosintering of both layers, an extremely dense electrolyte layer was obtained, and the cathode layer retained its high porosity.
PB  - Wiley, Hoboken
T2  - International Journal of Applied Ceramic Technology
T1  - The Electrophoretic Deposition of Lanthanum Manganite Powders for a Cathode-Supported Solid Oxide Fuel Cell in Planar and Tubular Configurations
EP  - 556
IS  - 6
SP  - 548
VL  - 5
DO  - 10.1111/j.1744-7402.2008.02218.x
ER  - 

@article{
author = "Krkljus, Ivana and Branković, Zorica and Duris, Katarina and Vukotić, Vesna M and Branković, Goran and Bernik, Slavko",
year = "2008",
abstract = "The purpose of this research was to obtain porous, high-quality cathodes for solid oxide fuel cells in both planar and tubular shapes. To accomplish this, cathodic electrophoretic deposition of the LaMnO3 powder (synthesized by the modified sol-gel method proposed by Pechini) was performed. The optimal sintering temperatures were 1200 degrees C and 1300 degrees C for the tubular and planar configurations, respectively. Single-phase deposits with about 40% porosity were obtained in both configurations. The cathode quality was confirmed by depositing an electrolyte layer of YSZ. After the cosintering of both layers, an extremely dense electrolyte layer was obtained, and the cathode layer retained its high porosity.",
publisher = "Wiley, Hoboken",
journal = "International Journal of Applied Ceramic Technology",
title = "The Electrophoretic Deposition of Lanthanum Manganite Powders for a Cathode-Supported Solid Oxide Fuel Cell in Planar and Tubular Configurations",
pages = "556-548",
number = "6",
volume = "5",
doi = "10.1111/j.1744-7402.2008.02218.x"
}

Krkljus, I., Branković, Z., Duris, K., Vukotić, V. M., Branković, G.,& Bernik, S.. (2008). The Electrophoretic Deposition of Lanthanum Manganite Powders for a Cathode-Supported Solid Oxide Fuel Cell in Planar and Tubular Configurations. in International Journal of Applied Ceramic Technology
Wiley, Hoboken., 5(6), 548-556.
https://doi.org/10.1111/j.1744-7402.2008.02218.x

Krkljus I, Branković Z, Duris K, Vukotić VM, Branković G, Bernik S. The Electrophoretic Deposition of Lanthanum Manganite Powders for a Cathode-Supported Solid Oxide Fuel Cell in Planar and Tubular Configurations. in International Journal of Applied Ceramic Technology. 2008;5(6):548-556.
doi:10.1111/j.1744-7402.2008.02218.x .

Krkljus, Ivana, Branković, Zorica, Duris, Katarina, Vukotić, Vesna M, Branković, Goran, Bernik, Slavko, "The Electrophoretic Deposition of Lanthanum Manganite Powders for a Cathode-Supported Solid Oxide Fuel Cell in Planar and Tubular Configurations" in International Journal of Applied Ceramic Technology, 5, no. 6 (2008):548-556,
https://doi.org/10.1111/j.1744-7402.2008.02218.x . .

TY  - JOUR
AU  - Djuriš, K.
AU  - Branković, Goran
AU  - Branković, Zorica
AU  - Bernik, Slavko
AU  - Počuča-Nešić, Milica
AU  - Poleti, Dejan
AU  - Antić, B.
PY  - 2007
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/218
AB  - In this work pure and doped LMO were prepared using modified Pechini method from lanthanum and manganese citrates. Lanthanum citrate was prepared starting from La2O3, while manganese citrate was prepared from Mn(NO3)(2). Valence state of the manganese was controlled by adjusting pH value of the solution and confirmed by EPR and UV/VIS analysis. Thermal treatment conditions for preparation of LMO powders were determined from TG/DTA of dried precursors. XRD results confirmed that pure perovskite phase was successfully prepared in single LMO and Ca-doped LMO. SEM and measurements of specific surface area of the powders showed the existence of large agglomerates consisting of submicronic primary particles.
PB  - Trans Tech Publications Ltd
T2  - Materials Science Forum
T1  - Synthesis of pure and doped LaMnO3 powders from citrate precursors
EP  - 242
SP  - 237
VL  - 555
DO  - 10.4028/0-87849-441-3.237
ER  - 

@article{
author = "Djuriš, K. and Branković, Goran and Branković, Zorica and Bernik, Slavko and Počuča-Nešić, Milica and Poleti, Dejan and Antić, B.",
year = "2007",
abstract = "In this work pure and doped LMO were prepared using modified Pechini method from lanthanum and manganese citrates. Lanthanum citrate was prepared starting from La2O3, while manganese citrate was prepared from Mn(NO3)(2). Valence state of the manganese was controlled by adjusting pH value of the solution and confirmed by EPR and UV/VIS analysis. Thermal treatment conditions for preparation of LMO powders were determined from TG/DTA of dried precursors. XRD results confirmed that pure perovskite phase was successfully prepared in single LMO and Ca-doped LMO. SEM and measurements of specific surface area of the powders showed the existence of large agglomerates consisting of submicronic primary particles.",
publisher = "Trans Tech Publications Ltd",
journal = "Materials Science Forum",
title = "Synthesis of pure and doped LaMnO3 powders from citrate precursors",
pages = "242-237",
volume = "555",
doi = "10.4028/0-87849-441-3.237"
}

Djuriš, K., Branković, G., Branković, Z., Bernik, S., Počuča-Nešić, M., Poleti, D.,& Antić, B.. (2007). Synthesis of pure and doped LaMnO3 powders from citrate precursors. in Materials Science Forum
Trans Tech Publications Ltd., 555, 237-242.
https://doi.org/10.4028/0-87849-441-3.237

Djuriš K, Branković G, Branković Z, Bernik S, Počuča-Nešić M, Poleti D, Antić B. Synthesis of pure and doped LaMnO3 powders from citrate precursors. in Materials Science Forum. 2007;555:237-242.
doi:10.4028/0-87849-441-3.237 .

Djuriš, K., Branković, Goran, Branković, Zorica, Bernik, Slavko, Počuča-Nešić, Milica, Poleti, Dejan, Antić, B., "Synthesis of pure and doped LaMnO3 powders from citrate precursors" in Materials Science Forum, 555 (2007):237-242,
https://doi.org/10.4028/0-87849-441-3.237 . .

TY  - JOUR
AU  - Žunić, Milan
AU  - Branković, Zorica
AU  - Bernik, Slavko
AU  - Goes, M. S.
AU  - Branković, Goran
PY  - 2007
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/193
AB  - Two ways of application of intensive milling in ZnO varistors processing were compared. First was intensive milling of mixture of previously prepared constituent phases. In this case, intensive milling was applied only to obtain highly activated nanocrystalline varistor powder mixtures. Second application is intensive milling of simple mixture of oxides that could result not only in activation and formation of nanocrystal line powders, but also in mechanochernical reaction and synthesis of constituent phases. Powders and ceramics samples were characterized by XRD and SEM analysis. as well as by de electrical measurements (nonlinearity coefficients, leakage current and breakdown field). Differences in microstructural and electrical properties of obtained varistors were discussed and optimal milling and processing conditions were recommended. The best electrical characteristics were found in sample ZI -DMCP-m, which exhibited leakage current of 2.5 mu A/cm(2), nonlinear coefficient reaching 58 and breakdown field of 8950 V/cm.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of the European Ceramic Society
T1  - ZnO varistors from intensively milled powders
EP  - 3900
IS  - 13-15
SP  - 3897
VL  - 27
DO  - 10.1016/j.jeurceramsoc.2007.02.055
ER  - 

@article{
author = "Žunić, Milan and Branković, Zorica and Bernik, Slavko and Goes, M. S. and Branković, Goran",
year = "2007",
abstract = "Two ways of application of intensive milling in ZnO varistors processing were compared. First was intensive milling of mixture of previously prepared constituent phases. In this case, intensive milling was applied only to obtain highly activated nanocrystalline varistor powder mixtures. Second application is intensive milling of simple mixture of oxides that could result not only in activation and formation of nanocrystal line powders, but also in mechanochernical reaction and synthesis of constituent phases. Powders and ceramics samples were characterized by XRD and SEM analysis. as well as by de electrical measurements (nonlinearity coefficients, leakage current and breakdown field). Differences in microstructural and electrical properties of obtained varistors were discussed and optimal milling and processing conditions were recommended. The best electrical characteristics were found in sample ZI -DMCP-m, which exhibited leakage current of 2.5 mu A/cm(2), nonlinear coefficient reaching 58 and breakdown field of 8950 V/cm.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of the European Ceramic Society",
title = "ZnO varistors from intensively milled powders",
pages = "3900-3897",
number = "13-15",
volume = "27",
doi = "10.1016/j.jeurceramsoc.2007.02.055"
}

Žunić, M., Branković, Z., Bernik, S., Goes, M. S.,& Branković, G.. (2007). ZnO varistors from intensively milled powders. in Journal of the European Ceramic Society
Elsevier Sci Ltd, Oxford., 27(13-15), 3897-3900.
https://doi.org/10.1016/j.jeurceramsoc.2007.02.055

Žunić M, Branković Z, Bernik S, Goes MS, Branković G. ZnO varistors from intensively milled powders. in Journal of the European Ceramic Society. 2007;27(13-15):3897-3900.
doi:10.1016/j.jeurceramsoc.2007.02.055 .

Žunić, Milan, Branković, Zorica, Bernik, Slavko, Goes, M. S., Branković, Goran, "ZnO varistors from intensively milled powders" in Journal of the European Ceramic Society, 27, no. 13-15 (2007):3897-3900,
https://doi.org/10.1016/j.jeurceramsoc.2007.02.055 . .

TY  - JOUR
AU  - Branković, Zorica
AU  - Branković, Goran
AU  - Bernik, Slavko
AU  - Žunić, Milan
PY  - 2007
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/185
AB  - The aim of this work was to reduce number of additives using new method of preparation, refered as "direct mixing of the constituent phases". The method is based on sintering of a mixture of constituent phases with the following compositions: ZnO phase uniformly doped with 0.1 mol% Mn2+ and 0.1 mol% Co2+, gamma-Bi2O3 stabilized with Mn2+ and spinel phase of composition Zn1.86Co0.46Sb0.67O4 or Zn1.971Ni0.090Co0.030Cr0.247Mn0.090Sb0.545O4. The varistors sintered at 1030 degrees C showed good electrical properties, with nonlinearity coefficient reaching 50 and low values of leakage current. To improve microstructure some powder mixtures were intensively milled and further processed on the same way as unmilled powder mixtures. Electrical and microstructural properties of milled and unmilled samples were compared.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of the European Ceramic Society
T1  - ZnO varistors with reduced amount of additives prepared by direct mixing of constituent phases
EP  - 1104
IS  - 2-3
SP  - 1101
VL  - 27
DO  - 10.1016/j.jeurceramsoc.2006.05.040
ER  - 

@article{
author = "Branković, Zorica and Branković, Goran and Bernik, Slavko and Žunić, Milan",
year = "2007",
abstract = "The aim of this work was to reduce number of additives using new method of preparation, refered as "direct mixing of the constituent phases". The method is based on sintering of a mixture of constituent phases with the following compositions: ZnO phase uniformly doped with 0.1 mol% Mn2+ and 0.1 mol% Co2+, gamma-Bi2O3 stabilized with Mn2+ and spinel phase of composition Zn1.86Co0.46Sb0.67O4 or Zn1.971Ni0.090Co0.030Cr0.247Mn0.090Sb0.545O4. The varistors sintered at 1030 degrees C showed good electrical properties, with nonlinearity coefficient reaching 50 and low values of leakage current. To improve microstructure some powder mixtures were intensively milled and further processed on the same way as unmilled powder mixtures. Electrical and microstructural properties of milled and unmilled samples were compared.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of the European Ceramic Society",
title = "ZnO varistors with reduced amount of additives prepared by direct mixing of constituent phases",
pages = "1104-1101",
number = "2-3",
volume = "27",
doi = "10.1016/j.jeurceramsoc.2006.05.040"
}

Branković, Z., Branković, G., Bernik, S.,& Žunić, M.. (2007). ZnO varistors with reduced amount of additives prepared by direct mixing of constituent phases. in Journal of the European Ceramic Society
Elsevier Sci Ltd, Oxford., 27(2-3), 1101-1104.
https://doi.org/10.1016/j.jeurceramsoc.2006.05.040

Branković Z, Branković G, Bernik S, Žunić M. ZnO varistors with reduced amount of additives prepared by direct mixing of constituent phases. in Journal of the European Ceramic Society. 2007;27(2-3):1101-1104.
doi:10.1016/j.jeurceramsoc.2006.05.040 .

Branković, Zorica, Branković, Goran, Bernik, Slavko, Žunić, Milan, "ZnO varistors with reduced amount of additives prepared by direct mixing of constituent phases" in Journal of the European Ceramic Society, 27, no. 2-3 (2007):1101-1104,
https://doi.org/10.1016/j.jeurceramsoc.2006.05.040 . .