Effects of Bi4Ti3O12 addition on the microstructure and dielectric properties of modified BaTiO3 under a reducing atmosphere

被引：31

作者：

Jain, T. A. ^{[1
]}

Chen, C. C. ^{[1
]}

Fung, K. Z. ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Mat Sci & Engn, Tainan 701, Taiwan

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2009年 / 29卷 / 12期

关键词：

Grain growth; Electron microscopy; Dielectric properties; BaTiO3; ACCEPTOR-DOPED BATIO3; BARIUM-TITANATE; TEMPERATURE STABILITY; CERAMICS; GRAINS; PHASE;

D O I：

10.1016/j.jeurceramsoc.2009.02.015

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effects of Bi4Ti3O12 addition on the microstructure and dielectric properties of Mn-modified BaTiO3 were investigated to develop low temperature fired BaTiO3-based ceramics with stable temperature characteristics. The sintering temperature of Mn-doped BaTiO3 could be reduced to 1200 degrees C by adding more than 1 mol% Bi4Ti3O12. TEM results show an apparent core-shell structure with 2 mol% Bi4Ti3O12 addition. However, it was destroyed when the Bi4Ti3O12 content increased from 2 to 4 mol%. The permittivity decreased and the Curie temperature shifted to higher temperature when the Bi4Ti3O12 content increased from 0 to 3 mol%. The temperature characteristic of capacitance was very close to the EIA X8R specification when 2 mol% Bi4Ti3O12 was added due to the presence of the core-shell grain structure and raised Curie temperature. With adequate Bi4Ti3O12 addition, the BaTiO3-based system shows great potential for applications in EIA X8R-type multilayer ceramic capacitors. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：2595 / 2601

页数：7

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