TY  - JOUR
AU  - Matović, Branko
AU  - Maletaškić, Jelena
AU  - Zagorac, Jelena B.
AU  - Pavkov, Vladimir
AU  - Maki, Ryosuke S.S.
AU  - Yoshida, Katsumi
AU  - Yano, Toyohiko
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8668
AB  - Three different lanthanide zirconate powders: Pr2Zr2O7, Sm2Zr2O7 and PrSmZr2O7 were prepared by combustion synthesis. The synthesis initially yielded amorphous powders, which crystallized after subsequent thermal treatment. Well-crystallized compounds were formed after calcination at temperature as low as 950 °C. Effect of the thermal treatment on the phase evolution was studied by X-ray powder diffraction (XRD). The powders calcined at the highest temperature (1550 °C) showed that all compositions possess the pyrochlore structure with the space group No. 227. The obtained powders were compacted and pressureless sintered without additive at 1600 °C for 4 h in the air. Microstructure development was examined by field emission scanning electron microscopy, as well as by transmission electron microscopy. It was found that the lowest value for thermal conductivity, 1.2 W/m K, was obtained for mixed lanthanide composition with pyrochlore structure (PrSmZr2O7). The effect of chemical composition on micro-hardness and thermal conductivity of the obtained zirconates was studied. © 2019 Elsevier Ltd
T2  - Journal of the European Ceramic Society
T1  - Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics
VL  - 40
IS  - 7
SP  - 2652
EP  - 2657
DO  - 10.1016/j.jeurceramsoc.2019.11.012
ER  - 

@article{
author = "Matović, Branko and Maletaškić, Jelena and Zagorac, Jelena B. and Pavkov, Vladimir and Maki, Ryosuke S.S. and Yoshida, Katsumi and Yano, Toyohiko",
year = "2020",
abstract = "Three different lanthanide zirconate powders: Pr2Zr2O7, Sm2Zr2O7 and PrSmZr2O7 were prepared by combustion synthesis. The synthesis initially yielded amorphous powders, which crystallized after subsequent thermal treatment. Well-crystallized compounds were formed after calcination at temperature as low as 950 °C. Effect of the thermal treatment on the phase evolution was studied by X-ray powder diffraction (XRD). The powders calcined at the highest temperature (1550 °C) showed that all compositions possess the pyrochlore structure with the space group No. 227. The obtained powders were compacted and pressureless sintered without additive at 1600 °C for 4 h in the air. Microstructure development was examined by field emission scanning electron microscopy, as well as by transmission electron microscopy. It was found that the lowest value for thermal conductivity, 1.2 W/m K, was obtained for mixed lanthanide composition with pyrochlore structure (PrSmZr2O7). The effect of chemical composition on micro-hardness and thermal conductivity of the obtained zirconates was studied. © 2019 Elsevier Ltd",
journal = "Journal of the European Ceramic Society",
title = "Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics",
volume = "40",
number = "7",
pages = "2652-2657",
doi = "10.1016/j.jeurceramsoc.2019.11.012"
}

Matović, B., Maletaškić, J., Zagorac, J. B., Pavkov, V., Maki, R. S.S., Yoshida, K.,& Yano, T.. (2020). Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics. in Journal of the European Ceramic Society, 40(7), 2652-2657.
https://doi.org/10.1016/j.jeurceramsoc.2019.11.012

Matović B, Maletaškić J, Zagorac JB, Pavkov V, Maki RS, Yoshida K, Yano T. Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics. in Journal of the European Ceramic Society. 2020;40(7):2652-2657.
doi:10.1016/j.jeurceramsoc.2019.11.012 .

Matović, Branko, Maletaškić, Jelena, Zagorac, Jelena B., Pavkov, Vladimir, Maki, Ryosuke S.S., Yoshida, Katsumi, Yano, Toyohiko, "Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics" in Journal of the European Ceramic Society, 40, no. 7 (2020):2652-2657,
https://doi.org/10.1016/j.jeurceramsoc.2019.11.012 . .

TY  - JOUR
AU  - Maletaškić, Jelena
AU  - Todorović, Bratislav
AU  - Gilić, Martina
AU  - Marinović-Cincović, Milena
AU  - Yoshida, Katsumi
AU  - Gubarevich, Anna
AU  - Matović, Branko
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8983
AB  - Sphene based glass-ceramics (CaTiSiO5), an excellent candidate for a host lattice of ceramic materials and for nuclear waste immobilization, has been prepared from a powder mixture of CaCO3, TiO2 and SiO2 using vibro-milling for homogenization. Starting powders were melted at 1400?C for 2 h, cooled to room temperature, grounded again, then crystallized by thermal treatment yielding a sphene glass-ceramic. The evolution of the phase composition during thermal treatment was investigated by X-ray powder diffraction (XRPD), FT-IR, Raman and thermal analyses (TG-DTA). Pure synthetic single phase sphene was formed at 800?C for 4 h, even it is very hard to obtain monophase powder at such low temperature. Powder morphology was analyzed by scanning electron microscopy (SEM).
T2  - Science of Sintering
T1  - Synthesis and characterization of monophase CaO-TiO2-SiO2 (sphene) based glass-ceramics
VL  - 52
IS  - 1
SP  - 41
EP  - 52
DO  - 10.2298/SOS2001041M
ER  - 

@article{
author = "Maletaškić, Jelena and Todorović, Bratislav and Gilić, Martina and Marinović-Cincović, Milena and Yoshida, Katsumi and Gubarevich, Anna and Matović, Branko",
year = "2020",
abstract = "Sphene based glass-ceramics (CaTiSiO5), an excellent candidate for a host lattice of ceramic materials and for nuclear waste immobilization, has been prepared from a powder mixture of CaCO3, TiO2 and SiO2 using vibro-milling for homogenization. Starting powders were melted at 1400?C for 2 h, cooled to room temperature, grounded again, then crystallized by thermal treatment yielding a sphene glass-ceramic. The evolution of the phase composition during thermal treatment was investigated by X-ray powder diffraction (XRPD), FT-IR, Raman and thermal analyses (TG-DTA). Pure synthetic single phase sphene was formed at 800?C for 4 h, even it is very hard to obtain monophase powder at such low temperature. Powder morphology was analyzed by scanning electron microscopy (SEM).",
journal = "Science of Sintering",
title = "Synthesis and characterization of monophase CaO-TiO2-SiO2 (sphene) based glass-ceramics",
volume = "52",
number = "1",
pages = "41-52",
doi = "10.2298/SOS2001041M"
}

Maletaškić, J., Todorović, B., Gilić, M., Marinović-Cincović, M., Yoshida, K., Gubarevich, A.,& Matović, B.. (2020). Synthesis and characterization of monophase CaO-TiO2-SiO2 (sphene) based glass-ceramics. in Science of Sintering, 52(1), 41-52.
https://doi.org/10.2298/SOS2001041M

Maletaškić J, Todorović B, Gilić M, Marinović-Cincović M, Yoshida K, Gubarevich A, Matović B. Synthesis and characterization of monophase CaO-TiO2-SiO2 (sphene) based glass-ceramics. in Science of Sintering. 2020;52(1):41-52.
doi:10.2298/SOS2001041M .

Maletaškić, Jelena, Todorović, Bratislav, Gilić, Martina, Marinović-Cincović, Milena, Yoshida, Katsumi, Gubarevich, Anna, Matović, Branko, "Synthesis and characterization of monophase CaO-TiO2-SiO2 (sphene) based glass-ceramics" in Science of Sintering, 52, no. 1 (2020):41-52,
https://doi.org/10.2298/SOS2001041M . .

TY  - JOUR
AU  - Maletaškić, Jelena
AU  - Luković, Jelena M.
AU  - Yoshida, Katsumi
AU  - Yano, Toyohiko
AU  - Maki, Ryosuke S. S.
AU  - Gubarevich, Anna
AU  - Matović, Branko
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9720
AB  - Boron-rich phases like boron carbide and boron suboxide (nominally B6O), with high hardness, low density and chemical inertness, are used as an excellent thermal conducting material, as abrasives and for other high-wear applications. In addition, their application as a nuclear material is especially significant. This study presents a synthetic method for preparation of B6O at temperatures between 1200° and 1800°C. The synthesis was done in an argon atmosphere by using amorphous boron and boric acid in appropriate molar ratio. The evolution of the phase composition during thermal treatment was investigated by X-ray diffraction. A sample obtained at 1800°C consisted of B6O and B4C phases, revealing the intense reaction of B6O with carbon substrate in a vacuum. Sintering behaviour of the synthesized boron suboxide was followed with a scanning electron microscope
T2  - Materials Today: Proceedings
T1  - High-temperature synthesis and characterization of boron suboxide (B6O) and boron containing hard materials
VL  - 16
SP  - 95
EP  - 101
DO  - 10.1016/j.matpr.2019.05.281
ER  - 

@article{
author = "Maletaškić, Jelena and Luković, Jelena M. and Yoshida, Katsumi and Yano, Toyohiko and Maki, Ryosuke S. S. and Gubarevich, Anna and Matović, Branko",
year = "2019",
abstract = "Boron-rich phases like boron carbide and boron suboxide (nominally B6O), with high hardness, low density and chemical inertness, are used as an excellent thermal conducting material, as abrasives and for other high-wear applications. In addition, their application as a nuclear material is especially significant. This study presents a synthetic method for preparation of B6O at temperatures between 1200° and 1800°C. The synthesis was done in an argon atmosphere by using amorphous boron and boric acid in appropriate molar ratio. The evolution of the phase composition during thermal treatment was investigated by X-ray diffraction. A sample obtained at 1800°C consisted of B6O and B4C phases, revealing the intense reaction of B6O with carbon substrate in a vacuum. Sintering behaviour of the synthesized boron suboxide was followed with a scanning electron microscope",
journal = "Materials Today: Proceedings",
title = "High-temperature synthesis and characterization of boron suboxide (B6O) and boron containing hard materials",
volume = "16",
pages = "95-101",
doi = "10.1016/j.matpr.2019.05.281"
}

Maletaškić, J., Luković, J. M., Yoshida, K., Yano, T., Maki, R. S. S., Gubarevich, A.,& Matović, B.. (2019). High-temperature synthesis and characterization of boron suboxide (B6O) and boron containing hard materials. in Materials Today: Proceedings, 16, 95-101.
https://doi.org/10.1016/j.matpr.2019.05.281

Maletaškić J, Luković JM, Yoshida K, Yano T, Maki RSS, Gubarevich A, Matović B. High-temperature synthesis and characterization of boron suboxide (B6O) and boron containing hard materials. in Materials Today: Proceedings. 2019;16:95-101.
doi:10.1016/j.matpr.2019.05.281 .

Maletaškić, Jelena, Luković, Jelena M., Yoshida, Katsumi, Yano, Toyohiko, Maki, Ryosuke S. S., Gubarevich, Anna, Matović, Branko, "High-temperature synthesis and characterization of boron suboxide (B6O) and boron containing hard materials" in Materials Today: Proceedings, 16 (2019):95-101,
https://doi.org/10.1016/j.matpr.2019.05.281 . .

TY  - JOUR
AU  - Prekajski-Đorđević, Marija D.
AU  - Maletaškić, Jelena
AU  - Stanković, Nadežda
AU  - Babić, Biljana M.
AU  - Yoshida, Katsumi
AU  - Yano, Toyohiko
AU  - Matović, Branko
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1874
AB  - Hydroxyapatite was used as the inert matrix for in-situ immobilization of strontium (Sr) radioactive isotopes at room temperature. A nano-emulsification method was applied to synthesize Sr-substituted calcium hydroxyapatite (Ca1-xSrx)PO4)(6)(OH)(2). The concentration of incorporated Sr was in the range of 0 LT = x LT = 1. Immobilization of Sr was evaluated using a stable isotope instead of radioactive isotope. The effect of strontium concentration on the crystal structure was studied and the results have showed that in the whole concentration range, Sr forms solid solutions with the host hydroxyapatite crystal structure. Powders comprised of nanometre sized particles were obtained and their properties, such as crystallite and particle size, changes in lattice parameters as function of dopant content and thermal stability, were further examined. It was found that the crystal structure of obtained powders is thermally stable at high temperatures. No secondary phases were formed in as-prepared powders or during calcination. The results in this study showed that nano-emulsion strategy provides a simple pathway for synthesis of a single-phase Sr-substituted hydroxyapatite, which can be used for immobilization of Sr radioactive isotopes.
T2  - Ceramics International
T1  - In-situ immobilization of Sr radioactive isotope using nanocrystalline hydroxyapatite
VL  - 44
IS  - 2
SP  - 1771
EP  - 1777
DO  - 10.1016/j.ceramint.2017.10.110
ER  - 

@article{
author = "Prekajski-Đorđević, Marija D. and Maletaškić, Jelena and Stanković, Nadežda and Babić, Biljana M. and Yoshida, Katsumi and Yano, Toyohiko and Matović, Branko",
year = "2018",
abstract = "Hydroxyapatite was used as the inert matrix for in-situ immobilization of strontium (Sr) radioactive isotopes at room temperature. A nano-emulsification method was applied to synthesize Sr-substituted calcium hydroxyapatite (Ca1-xSrx)PO4)(6)(OH)(2). The concentration of incorporated Sr was in the range of 0 LT = x LT = 1. Immobilization of Sr was evaluated using a stable isotope instead of radioactive isotope. The effect of strontium concentration on the crystal structure was studied and the results have showed that in the whole concentration range, Sr forms solid solutions with the host hydroxyapatite crystal structure. Powders comprised of nanometre sized particles were obtained and their properties, such as crystallite and particle size, changes in lattice parameters as function of dopant content and thermal stability, were further examined. It was found that the crystal structure of obtained powders is thermally stable at high temperatures. No secondary phases were formed in as-prepared powders or during calcination. The results in this study showed that nano-emulsion strategy provides a simple pathway for synthesis of a single-phase Sr-substituted hydroxyapatite, which can be used for immobilization of Sr radioactive isotopes.",
journal = "Ceramics International",
title = "In-situ immobilization of Sr radioactive isotope using nanocrystalline hydroxyapatite",
volume = "44",
number = "2",
pages = "1771-1777",
doi = "10.1016/j.ceramint.2017.10.110"
}

Prekajski-Đorđević, M. D., Maletaškić, J., Stanković, N., Babić, B. M., Yoshida, K., Yano, T.,& Matović, B.. (2018). In-situ immobilization of Sr radioactive isotope using nanocrystalline hydroxyapatite. in Ceramics International, 44(2), 1771-1777.
https://doi.org/10.1016/j.ceramint.2017.10.110

Prekajski-Đorđević MD, Maletaškić J, Stanković N, Babić BM, Yoshida K, Yano T, Matović B. In-situ immobilization of Sr radioactive isotope using nanocrystalline hydroxyapatite. in Ceramics International. 2018;44(2):1771-1777.
doi:10.1016/j.ceramint.2017.10.110 .

Prekajski-Đorđević, Marija D., Maletaškić, Jelena, Stanković, Nadežda, Babić, Biljana M., Yoshida, Katsumi, Yano, Toyohiko, Matović, Branko, "In-situ immobilization of Sr radioactive isotope using nanocrystalline hydroxyapatite" in Ceramics International, 44, no. 2 (2018):1771-1777,
https://doi.org/10.1016/j.ceramint.2017.10.110 . .

TY  - JOUR
AU  - Maletaškić, Jelena
AU  - Stanković, Nadežda
AU  - Daneu, Nina
AU  - Babić, Biljana M.
AU  - Stoiljković, Milovan
AU  - Yoshida, Katsumi
AU  - Matović, Branko
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7663
AB  - Nanofibrous silica with a high surface area was produced from chrysotile by the acid-leaching method. Natural mineral chrysotile asbestos from Stragari, Korlace in Serbia was used as the starting material. The fibers were modified by chemical treatment with 1 M HCl and the mineral dissolution was monitored by transmission electron microscopy, X-ray powder diffraction, inductively coupled plasma spectrometry and low-temperature nitrogen adsorption techniques to highlight the effects of the leaching process. The results showed that the applied concentration of acid solution and processing time of 4 h were sufficient to effectively remove the magnesium hydroxide layer and transform the crystal structure of the hazardous starting chrysotile to porous SiO2 nanofibers. With prolonged acid leaching, the specific surface area, S (BET), calculated by BET equation, was increased from 147 up to 435 m(2) g(- 1), with micropores representing a significant part of the specific surface.
T2  - Physics and Chemistry of Minerals
T1  - Acid leaching of natural chrysotile asbestos to mesoporous silica fibers
VL  - 45
IS  - 4
SP  - 343
EP  - 351
DO  - 10.1007/s00269-017-0924-z
ER  - 

@article{
author = "Maletaškić, Jelena and Stanković, Nadežda and Daneu, Nina and Babić, Biljana M. and Stoiljković, Milovan and Yoshida, Katsumi and Matović, Branko",
year = "2018",
abstract = "Nanofibrous silica with a high surface area was produced from chrysotile by the acid-leaching method. Natural mineral chrysotile asbestos from Stragari, Korlace in Serbia was used as the starting material. The fibers were modified by chemical treatment with 1 M HCl and the mineral dissolution was monitored by transmission electron microscopy, X-ray powder diffraction, inductively coupled plasma spectrometry and low-temperature nitrogen adsorption techniques to highlight the effects of the leaching process. The results showed that the applied concentration of acid solution and processing time of 4 h were sufficient to effectively remove the magnesium hydroxide layer and transform the crystal structure of the hazardous starting chrysotile to porous SiO2 nanofibers. With prolonged acid leaching, the specific surface area, S (BET), calculated by BET equation, was increased from 147 up to 435 m(2) g(- 1), with micropores representing a significant part of the specific surface.",
journal = "Physics and Chemistry of Minerals",
title = "Acid leaching of natural chrysotile asbestos to mesoporous silica fibers",
volume = "45",
number = "4",
pages = "343-351",
doi = "10.1007/s00269-017-0924-z"
}

Maletaškić, J., Stanković, N., Daneu, N., Babić, B. M., Stoiljković, M., Yoshida, K.,& Matović, B.. (2018). Acid leaching of natural chrysotile asbestos to mesoporous silica fibers. in Physics and Chemistry of Minerals, 45(4), 343-351.
https://doi.org/10.1007/s00269-017-0924-z

Maletaškić J, Stanković N, Daneu N, Babić BM, Stoiljković M, Yoshida K, Matović B. Acid leaching of natural chrysotile asbestos to mesoporous silica fibers. in Physics and Chemistry of Minerals. 2018;45(4):343-351.
doi:10.1007/s00269-017-0924-z .

Maletaškić, Jelena, Stanković, Nadežda, Daneu, Nina, Babić, Biljana M., Stoiljković, Milovan, Yoshida, Katsumi, Matović, Branko, "Acid leaching of natural chrysotile asbestos to mesoporous silica fibers" in Physics and Chemistry of Minerals, 45, no. 4 (2018):343-351,
https://doi.org/10.1007/s00269-017-0924-z . .

TY  - JOUR
AU  - Matović, Branko
AU  - Maletaškić, Jelena
AU  - Bučevac, Dušan
AU  - Zagorac, Jelena B.
AU  - Fajar, Muhammad
AU  - Yoshida, Katsumi
AU  - Yano, Toyohiko
PY  - 2018
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0272884218315827
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7817
AB  - Pyrochlore compound (Gd2Hf2O7) powder was prepared by reacting gadolinium nitrate and hafnium chloride with NaOH during solid state displacement reaction at low temperature (SSDR). The SSDR process at room temperature initially yielded amorphous powders, which crystallized after subsequent calcination to form crystalline ceramics. The formation of crystalline Gd2Hf2O7took place at temperature as low as 600 °C. The phase evolution with thermal treatment as well as powder properties such as crystallite size, lattice strain and lattice parameter were studied by X-ray powder diffraction (XRPD) at room temperature. High-density ceramic pellets free of any additives were obtained after compaction of the obtained powders and subsequent sintering at 1600 °C for 4 h in air. Rietveld analysis of X-ray diffraction (XRD) pattern of sintered sample showed that the unit cell parameter of the obtained Gd2Hf2O7is 10.5501 (2) Å with x value = 0.345(2) in Wyckoff positions, indicating small distortion of octahedra. Hardness of the sintered samples was found to be 7.1 GPa. The thermal conductivity measurements performed in temperature range from room temperature to 1000 °C showed that thermal diffusivity of sintered samples was between 0.5 and 1 mm2/s whereas thermal conductivity was between 4 and 7 W/(m K).
T2  - Ceramics International
T1  - Synthesis, characterization and sintering of Gd2Hf2O7 powders synthesized by solid state displacement reaction at low temperature
VL  - 44
IS  - 14
SP  - 16972
EP  - 16976
DO  - 10.1016/j.ceramint.2018.06.138
ER  - 

@article{
author = "Matović, Branko and Maletaškić, Jelena and Bučevac, Dušan and Zagorac, Jelena B. and Fajar, Muhammad and Yoshida, Katsumi and Yano, Toyohiko",
year = "2018",
abstract = "Pyrochlore compound (Gd2Hf2O7) powder was prepared by reacting gadolinium nitrate and hafnium chloride with NaOH during solid state displacement reaction at low temperature (SSDR). The SSDR process at room temperature initially yielded amorphous powders, which crystallized after subsequent calcination to form crystalline ceramics. The formation of crystalline Gd2Hf2O7took place at temperature as low as 600 °C. The phase evolution with thermal treatment as well as powder properties such as crystallite size, lattice strain and lattice parameter were studied by X-ray powder diffraction (XRPD) at room temperature. High-density ceramic pellets free of any additives were obtained after compaction of the obtained powders and subsequent sintering at 1600 °C for 4 h in air. Rietveld analysis of X-ray diffraction (XRD) pattern of sintered sample showed that the unit cell parameter of the obtained Gd2Hf2O7is 10.5501 (2) Å with x value = 0.345(2) in Wyckoff positions, indicating small distortion of octahedra. Hardness of the sintered samples was found to be 7.1 GPa. The thermal conductivity measurements performed in temperature range from room temperature to 1000 °C showed that thermal diffusivity of sintered samples was between 0.5 and 1 mm2/s whereas thermal conductivity was between 4 and 7 W/(m K).",
journal = "Ceramics International",
title = "Synthesis, characterization and sintering of Gd2Hf2O7 powders synthesized by solid state displacement reaction at low temperature",
volume = "44",
number = "14",
pages = "16972-16976",
doi = "10.1016/j.ceramint.2018.06.138"
}

Matović, B., Maletaškić, J., Bučevac, D., Zagorac, J. B., Fajar, M., Yoshida, K.,& Yano, T.. (2018). Synthesis, characterization and sintering of Gd2Hf2O7 powders synthesized by solid state displacement reaction at low temperature. in Ceramics International, 44(14), 16972-16976.
https://doi.org/10.1016/j.ceramint.2018.06.138

Matović B, Maletaškić J, Bučevac D, Zagorac JB, Fajar M, Yoshida K, Yano T. Synthesis, characterization and sintering of Gd2Hf2O7 powders synthesized by solid state displacement reaction at low temperature. in Ceramics International. 2018;44(14):16972-16976.
doi:10.1016/j.ceramint.2018.06.138 .

Matović, Branko, Maletaškić, Jelena, Bučevac, Dušan, Zagorac, Jelena B., Fajar, Muhammad, Yoshida, Katsumi, Yano, Toyohiko, "Synthesis, characterization and sintering of Gd2Hf2O7 powders synthesized by solid state displacement reaction at low temperature" in Ceramics International, 44, no. 14 (2018):16972-16976,
https://doi.org/10.1016/j.ceramint.2018.06.138 . .

TY  - JOUR
AU  - Matović, Branko
AU  - Maletaškić, Jelena
AU  - Prekajski-Đorđević, Marija D.
AU  - Maksimović, Vesna
AU  - Zagorac, Jelena B.
AU  - Yoshida, Katsumi
AU  - Yano, Toyohiko
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1541
AB  - Nanometric-sized gadolinia (Gd2O3) powders were obtained by applying solid-state displacement reaction at room temperature and low temperature calcination. The XRD analysis revealed that the room temperature product was gadolinium hydroxide, Gd(OH)(3). In order to induce crystallization of Gd2O3, the subsequent calcination at 600 similar to 1200 degrees C of the room temperature reaction products was studied. Calculation of average crystallite size (D) as well as separation of the effect of crystallite size and strain of nanocrystals was performed on the basic of Williamson-Hall plots. The morphologies of powders calcined at different temperatures were followed by scanning electron microscopy. The pure cubic Gd2O3 phase was made at 600 degrees C which converted to monoclinic Gd2O3 phase between 1400 and 1600 degrees C. High density (96% of theoretical density) ceramic pellet free of any additives was obtained after pressureless sintering at 1600 degrees C for 4 h in air, using calcined powder at 600 degrees C. (C) 2017 Elsevier Ltd. All rights reserved.
T2  - Journal of the European Ceramic Society
T1  - Synthesis and characterization of nanometric gadolinia powders by room temperature solid-state displacement reaction and low temperature calcination
VL  - 37
IS  - 8
SP  - 2843
EP  - 2848
DO  - 10.1016/j.jeurceramsoc.2017.03.004
ER  - 

@article{
author = "Matović, Branko and Maletaškić, Jelena and Prekajski-Đorđević, Marija D. and Maksimović, Vesna and Zagorac, Jelena B. and Yoshida, Katsumi and Yano, Toyohiko",
year = "2017",
abstract = "Nanometric-sized gadolinia (Gd2O3) powders were obtained by applying solid-state displacement reaction at room temperature and low temperature calcination. The XRD analysis revealed that the room temperature product was gadolinium hydroxide, Gd(OH)(3). In order to induce crystallization of Gd2O3, the subsequent calcination at 600 similar to 1200 degrees C of the room temperature reaction products was studied. Calculation of average crystallite size (D) as well as separation of the effect of crystallite size and strain of nanocrystals was performed on the basic of Williamson-Hall plots. The morphologies of powders calcined at different temperatures were followed by scanning electron microscopy. The pure cubic Gd2O3 phase was made at 600 degrees C which converted to monoclinic Gd2O3 phase between 1400 and 1600 degrees C. High density (96% of theoretical density) ceramic pellet free of any additives was obtained after pressureless sintering at 1600 degrees C for 4 h in air, using calcined powder at 600 degrees C. (C) 2017 Elsevier Ltd. All rights reserved.",
journal = "Journal of the European Ceramic Society",
title = "Synthesis and characterization of nanometric gadolinia powders by room temperature solid-state displacement reaction and low temperature calcination",
volume = "37",
number = "8",
pages = "2843-2848",
doi = "10.1016/j.jeurceramsoc.2017.03.004"
}

Matović, B., Maletaškić, J., Prekajski-Đorđević, M. D., Maksimović, V., Zagorac, J. B., Yoshida, K.,& Yano, T.. (2017). Synthesis and characterization of nanometric gadolinia powders by room temperature solid-state displacement reaction and low temperature calcination. in Journal of the European Ceramic Society, 37(8), 2843-2848.
https://doi.org/10.1016/j.jeurceramsoc.2017.03.004

Matović B, Maletaškić J, Prekajski-Đorđević MD, Maksimović V, Zagorac JB, Yoshida K, Yano T. Synthesis and characterization of nanometric gadolinia powders by room temperature solid-state displacement reaction and low temperature calcination. in Journal of the European Ceramic Society. 2017;37(8):2843-2848.
doi:10.1016/j.jeurceramsoc.2017.03.004 .

Matović, Branko, Maletaškić, Jelena, Prekajski-Đorđević, Marija D., Maksimović, Vesna, Zagorac, Jelena B., Yoshida, Katsumi, Yano, Toyohiko, "Synthesis and characterization of nanometric gadolinia powders by room temperature solid-state displacement reaction and low temperature calcination" in Journal of the European Ceramic Society, 37, no. 8 (2017):2843-2848,
https://doi.org/10.1016/j.jeurceramsoc.2017.03.004 . .

TY  - JOUR
AU  - Matović, Branko
AU  - Bučevac, Dušan
AU  - Prekajski, Marija D.
AU  - Maksimović, Vesna
AU  - Gautam, D.
AU  - Yoshida, Katsumi
AU  - Yano, Toyohiko
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4831
AB  - Nanometric-sized yttrium doped HfO2 powders were obtained by applying metathesis and combustion reactions. The tailored composition of solid solutions was: Hf1-xYxO2-delta with concentration x ranging from 0 to 0.2. HfCl4 was used as a source of hafnium whereas Y(NO3)(3)center dot 6H(2)O was used as a source of yttrium. The obtained powders were annealed at different temperatures in order to induce crystallization of HfO2. The influence of dopant concentration, annealing temperature and annealing time on powder properties was examined. The XRD analysis revealed that the crystal structure of HfO2 depends on the dopant concentration. The samples doped with 20 mol% of yttrium and annealed at 1500 degrees C had high-temperature, cubic structure even after cooling to room temperature. The presence of relatively large amount of dopant was beneficial in stabilizing highly desirable cubic phase of HfO2. It was found that the crystallite size lies in the nanometric range ( LT 10 nm). (C) 2011 Elsevier Ltd. All rights reserved.
T2  - Journal of the European Ceramic Society
T1  - Synthesis and characterization of nanometric yttrium-doped hafnia solid solutions
VL  - 32
IS  - 9
SP  - 1971
EP  - 1976
DO  - 10.1016/j.jeurceramsoc.2011.10.029
ER  - 

@article{
author = "Matović, Branko and Bučevac, Dušan and Prekajski, Marija D. and Maksimović, Vesna and Gautam, D. and Yoshida, Katsumi and Yano, Toyohiko",
year = "2012",
abstract = "Nanometric-sized yttrium doped HfO2 powders were obtained by applying metathesis and combustion reactions. The tailored composition of solid solutions was: Hf1-xYxO2-delta with concentration x ranging from 0 to 0.2. HfCl4 was used as a source of hafnium whereas Y(NO3)(3)center dot 6H(2)O was used as a source of yttrium. The obtained powders were annealed at different temperatures in order to induce crystallization of HfO2. The influence of dopant concentration, annealing temperature and annealing time on powder properties was examined. The XRD analysis revealed that the crystal structure of HfO2 depends on the dopant concentration. The samples doped with 20 mol% of yttrium and annealed at 1500 degrees C had high-temperature, cubic structure even after cooling to room temperature. The presence of relatively large amount of dopant was beneficial in stabilizing highly desirable cubic phase of HfO2. It was found that the crystallite size lies in the nanometric range ( LT 10 nm). (C) 2011 Elsevier Ltd. All rights reserved.",
journal = "Journal of the European Ceramic Society",
title = "Synthesis and characterization of nanometric yttrium-doped hafnia solid solutions",
volume = "32",
number = "9",
pages = "1971-1976",
doi = "10.1016/j.jeurceramsoc.2011.10.029"
}

Matović, B., Bučevac, D., Prekajski, M. D., Maksimović, V., Gautam, D., Yoshida, K.,& Yano, T.. (2012). Synthesis and characterization of nanometric yttrium-doped hafnia solid solutions. in Journal of the European Ceramic Society, 32(9), 1971-1976.
https://doi.org/10.1016/j.jeurceramsoc.2011.10.029

Matović B, Bučevac D, Prekajski MD, Maksimović V, Gautam D, Yoshida K, Yano T. Synthesis and characterization of nanometric yttrium-doped hafnia solid solutions. in Journal of the European Ceramic Society. 2012;32(9):1971-1976.
doi:10.1016/j.jeurceramsoc.2011.10.029 .

Matović, Branko, Bučevac, Dušan, Prekajski, Marija D., Maksimović, Vesna, Gautam, D., Yoshida, Katsumi, Yano, Toyohiko, "Synthesis and characterization of nanometric yttrium-doped hafnia solid solutions" in Journal of the European Ceramic Society, 32, no. 9 (2012):1971-1976,
https://doi.org/10.1016/j.jeurceramsoc.2011.10.029 . .

TY  - JOUR
AU  - Matović, Branko
AU  - Bučevac, Dušan
AU  - Jiraborvornpongsa, Noppasint
AU  - Yoshida, Katsumi
AU  - Yano, Toyohiko
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4712
AB  - Nanometric-sized strontium doped ceria powders were prepared by combustion glycine-nitrate procedure. Cerium nitrate and strontium nitrate were used as starting material whereas glycine is used as a fuel. The tailored composition was: Ce1-xSrxO2-delta with concentration x ranging from 0 to 0.15. The effect of dopant concentration and subsequent calcination on crystal stability and lattice parameter was studied. Results showed that the obtained powders were solid solutions with a fluorite-type crystal structure. The particle size was in the nanometric range ( LT 15 nm). Calcination of as-prepared powders at 850 degrees C caused. the formation of secondary phase (SrCeO3) in samples containing with fraction of Sr2+ ions GT = 9 mol %. The solubility limit of Sr2+ ions in ceria lattice was between 6 and 9 mol % at 850 degrees C. The solid solution of 6 mol % Sr2+ was stable even at temperature as high as 1550 degrees C. (C)2012 The Ceramic Society of Japan. All rights reserved.
T2  - Journal of the Ceramic Society of Japan
T1  - Synthesis and characterization of nanometric strontium-doped ceria solid solutions via glycine-nitrate procedure
VL  - 120
IS  - 1398
SP  - 69
EP  - 73
DO  - 10.2109/jcersj2.120.69
ER  - 

@article{
author = "Matović, Branko and Bučevac, Dušan and Jiraborvornpongsa, Noppasint and Yoshida, Katsumi and Yano, Toyohiko",
year = "2012",
abstract = "Nanometric-sized strontium doped ceria powders were prepared by combustion glycine-nitrate procedure. Cerium nitrate and strontium nitrate were used as starting material whereas glycine is used as a fuel. The tailored composition was: Ce1-xSrxO2-delta with concentration x ranging from 0 to 0.15. The effect of dopant concentration and subsequent calcination on crystal stability and lattice parameter was studied. Results showed that the obtained powders were solid solutions with a fluorite-type crystal structure. The particle size was in the nanometric range ( LT 15 nm). Calcination of as-prepared powders at 850 degrees C caused. the formation of secondary phase (SrCeO3) in samples containing with fraction of Sr2+ ions GT = 9 mol %. The solubility limit of Sr2+ ions in ceria lattice was between 6 and 9 mol % at 850 degrees C. The solid solution of 6 mol % Sr2+ was stable even at temperature as high as 1550 degrees C. (C)2012 The Ceramic Society of Japan. All rights reserved.",
journal = "Journal of the Ceramic Society of Japan",
title = "Synthesis and characterization of nanometric strontium-doped ceria solid solutions via glycine-nitrate procedure",
volume = "120",
number = "1398",
pages = "69-73",
doi = "10.2109/jcersj2.120.69"
}

Matović, B., Bučevac, D., Jiraborvornpongsa, N., Yoshida, K.,& Yano, T.. (2012). Synthesis and characterization of nanometric strontium-doped ceria solid solutions via glycine-nitrate procedure. in Journal of the Ceramic Society of Japan, 120(1398), 69-73.
https://doi.org/10.2109/jcersj2.120.69

Matović B, Bučevac D, Jiraborvornpongsa N, Yoshida K, Yano T. Synthesis and characterization of nanometric strontium-doped ceria solid solutions via glycine-nitrate procedure. in Journal of the Ceramic Society of Japan. 2012;120(1398):69-73.
doi:10.2109/jcersj2.120.69 .

Matović, Branko, Bučevac, Dušan, Jiraborvornpongsa, Noppasint, Yoshida, Katsumi, Yano, Toyohiko, "Synthesis and characterization of nanometric strontium-doped ceria solid solutions via glycine-nitrate procedure" in Journal of the Ceramic Society of Japan, 120, no. 1398 (2012):69-73,
https://doi.org/10.2109/jcersj2.120.69 . .