Dielectric properties of Ba(Ti,Ce)O-3 from 10(2) to 10(5) Hz in the temperature range 85-700 K

被引:30
作者
Yu, Z
Ang, C
Jing, Z
Vilarinho, PM
Baptista, JL
机构
[1] Dept. of Ceram. and Glass Eng., University of Aveiro
关键词
D O I
10.1088/0953-8984/9/14/023
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
Ba(Ti1-xCex)O-3 ceramics with x = 0.1, 0.2, 0.3, 0.33, 0.4 and 0.5 have been synthesized by the mixed oxide method. Dielectric measurements were performed for Ba(Ti1-xCex)O-3 ceramics from 10(2) to 10(5) Hz in the temperature range 85-700 K. The dielectric measurements confirmed that the solid solution range extends up to about x = 0.3. In the solid solutions, the temperature of the permittivity maximum was shifted at a rate of -7 K/mol% Ce atom and the permittivity maximum decreased with increasing Ce content. The temperature and frequency dependence of the permittivity was fitted by the Curie-Weiss law beyond the transition temperature and characterized by parameters that are used to describe relaxer behaviour.
引用
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页码:3081 / 3088
页数:8
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