Enhanced dielectric and piezoelectric properties of aurivillius-type potassium bismuth titanate ceramics by cerium modification

被引：45

作者：

Wang, Chun-Ming ^{[1
]}

Wang, Jin-Feng ^{[1
]}

Mao, Chaoliang ^{[2
]}

Chen, Xuefeng ^{[2
]}

Dong, Xianlin ^{[2
]}

Gai, Zhi-Gang ^{[1
]}

Zhao, Ming-Lei ^{[1
]}

机构：

[1] Shandong Univ, State Key Lab Crystal Mat, Sch Phys, Jinan 250100, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 20050, Peoples R China

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2008年 / 91卷 / 09期

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

关键词：

D O I：

10.1111/j.1551-2916.2008.02557.x

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 microstructure, and dielectric and piezoelectric properties of the CeO2-modified potassium bismuth titanate K0.5Bi4.5Ti4O15 (KBT) piezoelectric ceramics were investigated. X-ray diffraction analysis revealed that the cerium-modified KBT ceramics have a pure four-layer Aurivillius-type structure. The piezoelectric properties of KBT ceramics were significantly enhanced and the dielectric loss decreased by cerium doping. The Curie temperature T-c and piezoelectric coefficient d(33) for the KBT ceramics with 0.50 wt% cerium modification were found to be 550 degrees C and 28 pC/N, respectively. The Curie temperature was found to decrease gradually from 555 degrees to 541 degrees C with cerium modification up to 1.00 wt%. Dielectric and annealing spectroscopy showed that the materials possess stable piezoelectric properties.

引用

页码：3094 / 3097

页数：4

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