Relaxor properties of Nb-modified (Ba0.8Sr0.2)TiO3 ceramics

被引：3
|
作者：
Szymczak, L. [1 ]
Ujma, Z. [1 ]
Adamczyk, M. [1 ]
Soszynski, A. [1 ]
Koperski, J. [1 ]
机构：
[1] Silesian Univ, Inst Phys, PL-40007 Katowice, Poland
来源：
PHASE TRANSITIONS | 2008年 / 81卷 / 11-12期
关键词：
barium strontium titanate; dielectric properties; ferroelectric relaxors;
D O I：
10.1080/01411590802457904
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
Nb-doped (Ba0.8Sr0.2)TiO3 ceramics were prepared using conventional mixed-oxide processing technique. Permittivity and loss factor were investigated as a function of temperature for various frequencies of the measuring field. The obtained results confirmed the relaxor ferroelectric behaviour of the studied ceramics, i.e. a strong frequency dispersion of the permittivity maximum and a visible shift of its temperature with frequency. Analysis of real part of permittivity allowed us to determine the value of the freezing temperature characterising the relaxor ferroelectrics. The physical processes, responsible for the relaxor behaviour of the studied ceramics are discussed.
引用
收藏
页码：1023 / 1030
页数：8
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