Effects of grain boundary on dielectric properties in fine-grained BaTiO3 ceramics

被引：22

作者：

Hiramatsu, T ^{[1
]}

Tamura, T ^{[1
]}

Wada, N ^{[1
]}

Tamura, H ^{[1
]}

Sakabe, Y ^{[1
]}

机构：

[1] Murata Mfg Co Ltd, Kyoto, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2005年 / 120卷 / 1-3期

关键词：

dielectric properties; high-resolution transmission electron microscope; BaTiO3; ceramics;

D O I：

10.1016/j.mseb.2005.02.054

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

BaTiO3 dielectric ceramics, which have no core-shell structure, were prepared. High-resolution transmission electron microscope (TEM) and the newly developed chemical etching analysis revealed the composition of the grain boundary. The grain boundary has an important role in stabilizing temperature dependence of a dielectric constant. The grain boundary causes a large stress against grains, resulting in a change of the domain structure. So, the stress from the grain boundary is considered to depress the dielectric abnormality at the Curie temperature. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：55 / 58

页数：4

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