Effects of (LiCe) co-substitution on the structural and electrical properties of CaBi2Nb2O9 ceramics

被引：36

作者：

Tian Xiao-Xia ^{[1
]}

Qu Shao-Bo ^{[1
,2
]}

Du Hong-Liang ^{[1
]}

Li Ye ^{[1
]}

Xu Zhuo ^{[2
]}

机构：

[1] AF Engn Univ, Coll Sci, Xian 710051, Peoples R China

[2] Xi An Jiao Tong Univ, Elect Mat Res Lab, Key Lab, Minist Educ, Xian 710049, Peoples R China

来源：

CHINESE PHYSICS B | 2012年 / 21卷 / 03期

基金：

中国国家自然科学基金;

关键词：

co-substitution; structural properties; electrical properties; CaBi2Nb2O9; PIEZOELECTRIC PROPERTIES; BISMUTH TITANATE; T-C; CABI4TI4O15; LI; CE;

D O I：

10.1088/1674-1056/21/3/037701

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The piezoelectric, dielectric, and ferroelectric properties of the (LiCe) co-substituted calcium bismuth niobate (CaBi2Nb2O9, CBNO) are investigated. The piezoelectric properties of CBNO ceramics are significantly enhanced and the dielectric loss tan delta decreased. This makes poling using (LiCe) co-substitution easier. The ceramics (where square represents A-site Ca2+ vacancies, possess a pure layered structure phase and no other phases can be found. The Ca-0.88(LiCe)(0.04)square 0.04Bi2Nb2O9 ceramics possess optimal piezoelectric properties, with piezoelectric coefficient (d(33)) and Curie temperature (T-C) found to be 13.3 pC/N and 960 degrees C, respectively. The dielectric and piezoelectric properties of the (LiCe) co-substituted CBNO ceramics exhibit very stable temperature behaviours. This demonstrates that the CBNO ceramics are a promising candidate for ultrahigh temperature applications.

引用

页数：5

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