Electrical properties of Na1/2Bi1/2TiO3-BaTiO3 ceramics

被引：534

作者：

Chu, BJ ^{[1
]}

Chen, DR ^{[1
]}

Li, GR ^{[1
]}

Yin, QR ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2002年 / 22卷 / 13期

关键词：

doping; electrical properties; (Na; Bi)TiO3-BaTiO3; nonstoichiometry; piezoelectric properties;

D O I：

10.1016/S0955-2219(02)00027-4

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：

Lead-free Na1/2Bi1/2TiO3 BaTiO3 piezoelectric ceramics with perovskite structure were studied. The piezoelectric properties of (1-x)Na1/2Bi1/2TiO3-xBaTiO(3) (x=0.02, 0.04, 0.06, 0.08, 0.10) ceramics were reported and their piezoelectric properties reach extreme values near the MPB (about x=0.06). Influences of nonstoichiometry and doping on the structures and piezoelectric properties of (Na1/2Bi1/2)(0.92)Ba0.08TiO3 ceramics were further studied. The relationship between piezoelectric constant and depolarization temperature of nonstoichiometric and doped ceramics was also investigated. It was found that in most of Na1/2Bi1/2TiO3-BaTiO3 ceramics studied, their depolarization temperatures were much lower than maximum temperatures of dielectric constant-temperature curves the origin of this phenomenon was discussed. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：2115 / 2121

页数：7

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