TY  - JOUR
AU  - Vijatović Petrović, Mirjana
AU  - Bobić, Jelena
AU  - Ramoska, T
AU  - Banys, J
AU  - Stojanović, Biljana D
PY  - 2011
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/494
AB  - Nanopowders of pure and antimony doped barium titanate (BaTiO3-BT) were synthesized by polymeric precursors method based on Pechini process. Obtained powders were pressed and sintered at 1300 degrees C for 8 h. XRD analysis showed the formation of cubic crystal structure in all nanopowders and tetragonal in BT ceramics. The influence of antimony concentration on structure change, grain size reduction and microstructure development was analyzed. Dielectric behavior of pure and antimony doped ceramics was studied as a function of temperature and frequency. The significant dielectric properties modification as a consequence of doping with different antimony concentration was noticed. The electrical resistivity measurements pointed out that antimony concentration influenced also on materials change from insulator to semiconductor.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Antimony doping effect on barium titanate structure and electrical properties
EP  - 2677
IS  - 7
SP  - 2669
VL  - 37
DO  - 10.1016/j.ceramint.2011.04.015
ER  - 

@article{
author = "Vijatović Petrović, Mirjana and Bobić, Jelena and Ramoska, T and Banys, J and Stojanović, Biljana D",
year = "2011",
abstract = "Nanopowders of pure and antimony doped barium titanate (BaTiO3-BT) were synthesized by polymeric precursors method based on Pechini process. Obtained powders were pressed and sintered at 1300 degrees C for 8 h. XRD analysis showed the formation of cubic crystal structure in all nanopowders and tetragonal in BT ceramics. The influence of antimony concentration on structure change, grain size reduction and microstructure development was analyzed. Dielectric behavior of pure and antimony doped ceramics was studied as a function of temperature and frequency. The significant dielectric properties modification as a consequence of doping with different antimony concentration was noticed. The electrical resistivity measurements pointed out that antimony concentration influenced also on materials change from insulator to semiconductor.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Antimony doping effect on barium titanate structure and electrical properties",
pages = "2677-2669",
number = "7",
volume = "37",
doi = "10.1016/j.ceramint.2011.04.015"
}

Vijatović Petrović, M., Bobić, J., Ramoska, T., Banys, J.,& Stojanović, B. D.. (2011). Antimony doping effect on barium titanate structure and electrical properties. in Ceramics International
Elsevier Sci Ltd, Oxford., 37(7), 2669-2677.
https://doi.org/10.1016/j.ceramint.2011.04.015

Vijatović Petrović M, Bobić J, Ramoska T, Banys J, Stojanović BD. Antimony doping effect on barium titanate structure and electrical properties. in Ceramics International. 2011;37(7):2669-2677.
doi:10.1016/j.ceramint.2011.04.015 .

Vijatović Petrović, Mirjana, Bobić, Jelena, Ramoska, T, Banys, J, Stojanović, Biljana D, "Antimony doping effect on barium titanate structure and electrical properties" in Ceramics International, 37, no. 7 (2011):2669-2677,
https://doi.org/10.1016/j.ceramint.2011.04.015 . .

TY  - JOUR
AU  - Vijatović Petrović, Mirjana
AU  - Bobić, Jelena
AU  - Ramoska, T
AU  - Banys, J
AU  - Stojanović, Biljana D
PY  - 2011
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/465
AB  - Pure and lanthanum doped barium titanate (BT) ceramics were prepared by sintering pellets at 1300 degrees C for 8 h, obtained from nanopowders synthesized by the polymeric precursor method. XRD results showed formation of a tetragonal structure. The presence of dopants changed the tetragonal structure to pseudo-cubic. The polygonal grain size was reduced up to 300 nm with addition of lanthanum as a donor dopant. Determined dielectric properties revealed that lanthanum modified BT ceramics possessed a diffused ferroelectric character in comparison with pure BT that is a classical ferroelectric material. In doped BT phase transition temperatures were shifted to lower temperatures and dielectric constant values were much higher than in pure BT. A modified Currie Weiss law was used to explore the connection between the doping level and degree of diffuseness of phase transitions. Impedance spectroscopy measurements were carried out at different temperatures in order to investigate electrical resistivity of materials and appearance of a PTCR effect.
PB  - Elsevier Science Inc, New York
T2  - Materials Characterization
T1  - Electrical properties of lanthanum doped barium titanate ceramics
EP  - 1006
IS  - 10
SP  - 1000
VL  - 62
DO  - 10.1016/j.matchar.2011.07.013
ER  - 

@article{
author = "Vijatović Petrović, Mirjana and Bobić, Jelena and Ramoska, T and Banys, J and Stojanović, Biljana D",
year = "2011",
abstract = "Pure and lanthanum doped barium titanate (BT) ceramics were prepared by sintering pellets at 1300 degrees C for 8 h, obtained from nanopowders synthesized by the polymeric precursor method. XRD results showed formation of a tetragonal structure. The presence of dopants changed the tetragonal structure to pseudo-cubic. The polygonal grain size was reduced up to 300 nm with addition of lanthanum as a donor dopant. Determined dielectric properties revealed that lanthanum modified BT ceramics possessed a diffused ferroelectric character in comparison with pure BT that is a classical ferroelectric material. In doped BT phase transition temperatures were shifted to lower temperatures and dielectric constant values were much higher than in pure BT. A modified Currie Weiss law was used to explore the connection between the doping level and degree of diffuseness of phase transitions. Impedance spectroscopy measurements were carried out at different temperatures in order to investigate electrical resistivity of materials and appearance of a PTCR effect.",
publisher = "Elsevier Science Inc, New York",
journal = "Materials Characterization",
title = "Electrical properties of lanthanum doped barium titanate ceramics",
pages = "1006-1000",
number = "10",
volume = "62",
doi = "10.1016/j.matchar.2011.07.013"
}

Vijatović Petrović, M., Bobić, J., Ramoska, T., Banys, J.,& Stojanović, B. D.. (2011). Electrical properties of lanthanum doped barium titanate ceramics. in Materials Characterization
Elsevier Science Inc, New York., 62(10), 1000-1006.
https://doi.org/10.1016/j.matchar.2011.07.013

Vijatović Petrović M, Bobić J, Ramoska T, Banys J, Stojanović BD. Electrical properties of lanthanum doped barium titanate ceramics. in Materials Characterization. 2011;62(10):1000-1006.
doi:10.1016/j.matchar.2011.07.013 .

Vijatović Petrović, Mirjana, Bobić, Jelena, Ramoska, T, Banys, J, Stojanović, Biljana D, "Electrical properties of lanthanum doped barium titanate ceramics" in Materials Characterization, 62, no. 10 (2011):1000-1006,
https://doi.org/10.1016/j.matchar.2011.07.013 . .

TY  - JOUR
AU  - Vijatović Petrović, Mirjana
AU  - Stojanović, Biljana D
AU  - Bobić, Jelena
AU  - Ramoska, T
AU  - Bowen, P
PY  - 2010
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/428
AB  - Pure and barium titanate (BT) powders doped with different lanthanum concentration were prepared by the polymeric precursor method (Pechini process) which was carried out as a three-stage process from organometallic complexes. Sintering of pressed powders was performed at 1300 degrees C for 2, 4 and 8 h. XRD analysis showed cubic BT powders with crystallite sizes between 20 and 25 nm and tetragonal crystal structure of BT ceramics. The influence of sintering time on grain growth was fairly obvious. It was found that lanthanum doping has significant effect on powders particle size and ceramics grain size. The influence of lanthanum concentration on grain size inhibition, improving the dielectric properties of BT ceramics was detected. The relation between sintering time, grain size, structure and electrical properties of the BT ceramics was analyzed.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Properties of lanthanum doped BaTiO3 produced from nanopowders
EP  - 1824
IS  - 6
SP  - 1817
VL  - 36
DO  - 10.1016/j.ceramint.2010.03.010
ER  - 

@article{
author = "Vijatović Petrović, Mirjana and Stojanović, Biljana D and Bobić, Jelena and Ramoska, T and Bowen, P",
year = "2010",
abstract = "Pure and barium titanate (BT) powders doped with different lanthanum concentration were prepared by the polymeric precursor method (Pechini process) which was carried out as a three-stage process from organometallic complexes. Sintering of pressed powders was performed at 1300 degrees C for 2, 4 and 8 h. XRD analysis showed cubic BT powders with crystallite sizes between 20 and 25 nm and tetragonal crystal structure of BT ceramics. The influence of sintering time on grain growth was fairly obvious. It was found that lanthanum doping has significant effect on powders particle size and ceramics grain size. The influence of lanthanum concentration on grain size inhibition, improving the dielectric properties of BT ceramics was detected. The relation between sintering time, grain size, structure and electrical properties of the BT ceramics was analyzed.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Properties of lanthanum doped BaTiO3 produced from nanopowders",
pages = "1824-1817",
number = "6",
volume = "36",
doi = "10.1016/j.ceramint.2010.03.010"
}

Vijatović Petrović, M., Stojanović, B. D., Bobić, J., Ramoska, T.,& Bowen, P.. (2010). Properties of lanthanum doped BaTiO3 produced from nanopowders. in Ceramics International
Elsevier Sci Ltd, Oxford., 36(6), 1817-1824.
https://doi.org/10.1016/j.ceramint.2010.03.010

Vijatović Petrović M, Stojanović BD, Bobić J, Ramoska T, Bowen P. Properties of lanthanum doped BaTiO3 produced from nanopowders. in Ceramics International. 2010;36(6):1817-1824.
doi:10.1016/j.ceramint.2010.03.010 .

Vijatović Petrović, Mirjana, Stojanović, Biljana D, Bobić, Jelena, Ramoska, T, Bowen, P, "Properties of lanthanum doped BaTiO3 produced from nanopowders" in Ceramics International, 36, no. 6 (2010):1817-1824,
https://doi.org/10.1016/j.ceramint.2010.03.010 . .

TY  - CONF
AU  - Banys, J.
AU  - Ramoska, T.
AU  - Vijatović Petrović, Mirjana
AU  - Bobić, Jelena
AU  - Stojanović, Biljana D
PY  - 2009
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/327
AB  - In the present paper the results of new ceramics of BaTiO3 with 0,5 mol% antimony were investigated by means of dielectric spectroscopy. Dielectric spectra of barium titanate with 0,5 mol% antimony revealed three parts: low frequency part which is caused by conductivity process, middle frequency part where the dielectric dispersion is nearly Debye type with the mean relaxation time which slightly changes with temperature and has a minima at about 300 K and 376 K, and high frequency part, which is caused by the higher frequency relaxation and polar modes contribution.
C3  - 11th International Conference and Exhibition of the European Ceramic Society 2009
T1  - Dielectric investigations of barium titanate doped with 0.5 mol.% antimony
EP  - 356
SP  - 354
VL  - 1
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_327
ER  - 

@conference{
author = "Banys, J. and Ramoska, T. and Vijatović Petrović, Mirjana and Bobić, Jelena and Stojanović, Biljana D",
year = "2009",
abstract = "In the present paper the results of new ceramics of BaTiO3 with 0,5 mol% antimony were investigated by means of dielectric spectroscopy. Dielectric spectra of barium titanate with 0,5 mol% antimony revealed three parts: low frequency part which is caused by conductivity process, middle frequency part where the dielectric dispersion is nearly Debye type with the mean relaxation time which slightly changes with temperature and has a minima at about 300 K and 376 K, and high frequency part, which is caused by the higher frequency relaxation and polar modes contribution.",
journal = "11th International Conference and Exhibition of the European Ceramic Society 2009",
title = "Dielectric investigations of barium titanate doped with 0.5 mol.% antimony",
pages = "356-354",
volume = "1",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_327"
}

Banys, J., Ramoska, T., Vijatović Petrović, M., Bobić, J.,& Stojanović, B. D.. (2009). Dielectric investigations of barium titanate doped with 0.5 mol.% antimony. in 11th International Conference and Exhibition of the European Ceramic Society 2009, 1, 354-356.
https://hdl.handle.net/21.15107/rcub_rimsi_327

Banys J, Ramoska T, Vijatović Petrović M, Bobić J, Stojanović BD. Dielectric investigations of barium titanate doped with 0.5 mol.% antimony. in 11th International Conference and Exhibition of the European Ceramic Society 2009. 2009;1:354-356.
https://hdl.handle.net/21.15107/rcub_rimsi_327 .

Banys, J., Ramoska, T., Vijatović Petrović, Mirjana, Bobić, Jelena, Stojanović, Biljana D, "Dielectric investigations of barium titanate doped with 0.5 mol.% antimony" in 11th International Conference and Exhibition of the European Ceramic Society 2009, 1 (2009):354-356,
https://hdl.handle.net/21.15107/rcub_rimsi_327 .