Nonlinear properties of antimony-doped BaTiO3 ceramics

被引：3
|
作者：
Curecheriu, L. [1 ]
Petrovic, M. M. Vijatovic [2 ]
Bobic, J. D. [2 ]
Stojanovic, B. D. [2 ]
机构：
[1] Alexandru Ioan Cuza Univ, Fac Phys, Dept Phys, Dielectr Ferroelect & Multiferro Grp, Iasi, Romania
[2] Univ Belgrade, Inst Multidisciplinary Res, YU-11000 Belgrade, Serbia
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2015年 / 119卷 / 02期
关键词：
POSITIVE TEMPERATURE-COEFFICIENT; DIELECTRIC-PROPERTIES; RELAXOR BEHAVIOR; ELECTRIC-FIELD; RESISTIVITY; BA(ZRXTI1-X)O-3; FERROELECTRICS; TUNABILITY; VOLTAGE;
D O I：
10.1007/s00339-015-9013-7
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Barium titanate nanopowders doped with various concentrations of antimony were synthesized by polymeric precursors method based on modified Pechini process. Obtained powders were pressed and sintered at 1,573 K for 8 h. The temperature dependence of dielectric permittivity pointed on the significant influence of added antimony on dielectric properties of obtained materials. The analysis of impedance spectrum in the temperature range 250-445 K has shown the presence of one semicircle that corresponds to the grain contribution but impedance spectrum at 773 K showed possible overlapping of two semicircles indicating also grain boundary resistivity. The total specific resistivity obtained from impedance analysis showed modest PTCR jump in the heavily doped barium titanate ceramics. The electric field dependence of permittivity of the ceramics was investigated in detail. The experimental data were analyzed using Johnson model.
引用
收藏
页码：681 / 686
页数：6
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