DIELECTRIC-RELAXATION IN BA(TI0.8ZR0.2)O3 CERAMICS PREPARED FROM SOL-GEL AND SOLID-STATE REACTION POWDERS

被引：17

作者：

KAZAOUI, S

RAVEZ, J

机构：

[1] Laboratoire de Chimie du Solide du CNRS, Université Bordeaux I, Talence Cedex, 33405

来源：

JOURNAL OF MATERIALS SCIENCE | 1993年 / 28卷 / 05期

关键词：

D O I：

10.1007/BF01191955

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to correlate dielectric relaxation properties with chemical homogeneity and microstructure in ferroelectric ceramics, powders are prepared both by sol gel route and solid-state reaction. This comparative study concerns Ba(Ti0.8Zr0.2)O3 ceramics, with maximum permittivity close to room temperature. Dielectric relaxation is reported in the frequency and temperature ranges 10(6) to 10(9) Hz and 250-350 K, respectively. A minimum of the relaxation frequency occurs close to the phase transition temperature. The variations of f(r) are correlated with chemical homogeneity and microstructure.

引用

页码：1211 / 1219

页数：9

共 22 条

[1]

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