Effect of tungsten doping in bismuth-layered Na0.5Bi2.5Nb2O9 high temperature piezoceramics

被引：51

作者：

Zhou, Zhiyong ^{[1
]}

Li, Yuchen ^{[1
]}

Hui, Shipeng ^{[1
]}

Dong, Xianlin ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Funct Mat & Devices, Shanghai 200050, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 01期

基金：

中国国家自然科学基金;

关键词：

FERROELECTRIC CERAMICS; ELECTRICAL-PROPERTIES; STRUCTURED FERROELECTRICS; PIEZOELECTRIC PROPERTIES; CRYSTAL-CHEMISTRY; SOLID-SOLUTION; BI4TI3O12; MICROSTRUCTURE; CONDUCTIVITY; BI3TINBO9;

D O I：

10.1063/1.4861460

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effects of W6+ doping for B site on the structural and electrical properties of Na0.5Bi2.5Nb2O9-based ceramics were studied. It shows a trend of preferable orientation growth along c-axis and the Curie point (T-c) decreases slightly from 792 to 761 degrees C with the increasing W6+ amount. The electrical resistivity of Na0.5Bi2.5Nb2O9-based ceramics increases as much as about two orders of magnitude and the piezoelectric constant d(33) is significantly improved from 10.5 to 21.8 pC/N by W6+ modification. The composition of Na0.5Bi2.5Nb1.99W0.01O9 with a high T-c (792 degrees C), very good temperature stability up to similar to 0.96T(c), a large d(33) of 17.9 pC/N and sufficient high resistivity, is an excellent candidate for high temperature piezoelectric applications. (C) 2014 AIP Publishing LLC.

引用

页数：4

共 30 条

[1] FATIGUE-FREE FERROELECTRIC CAPACITORS WITH PLATINUM-ELECTRODES [J].