Effect of Ta substitution on microstructure and electrical properties of 0.80Pb(Mg1/3Nb2/3)O3-0.20PbTiO3 ceramics

被引：9
|
作者：
Cao, LH [1 ]
Yao, X [1 ]
Xu, Z [1 ]
机构：
[1] Xian Jiaotong Univ, Minist Educ, Key Lab, Elect Mat Res Lab, Xian 710049, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2004年 / 30卷 / 07期
关键词：
dielectric properties; piezoelectric properties; Ta substitution; PMN-PT; columbite;
D O I：
10.1016/j.ceramint.2003.12.104
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 influence on microstructure and electrical properties of Ta-substituted 0.80Pb(Mg1/3Nb2/3)O-3-0.20PbTiO(3) (0.80PMN-0.20PT) ceramics has been investigated. The grain size decreases with Ta concentration increases. The sample with 10 at.% Ta substitution has dense structure and better dielectric and piezoelectric properties, with density similar to7.7 g/cm(3), epsilon(m) similar to45,000, k(p) similar to34% and d(33) similar to158 pC/N. Less or more Ta doping in 0.80PMN-0.20PT ceramics is all harmful to dielectric and piezoelectric properties. (C) 2004 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：1369 / 1372
页数：4
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