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 . .