The Effect of Barium Substitution on the Ferroelectric Properties of Sr2Nb2O7 Ceramics

被引：36

作者：

Gao, Zhipeng ^{[1
]}

Ning, Huanpo ^{[2
]}

Chen, Chen ^{[1
]}

Wilson, Rory ^{[1
]}

Shi, Baogui ^{[3
]}

Ye, Haitao ^{[3
]}

Yan, Haixue ^{[1
]}

Reece, Michael J. ^{[1
,2
]}

机构：

[1] Queen Mary Univ London, Sch Mat Sci & Engn, London E1 4NS, England

[2] Nanoforce Technol Ltd, London E1 4NS, England

[3] Aston Univ, Sch Engn & Appl Sci, Birmingham B4 7ET, W Midlands, England

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2013年 / 96卷 / 04期

关键词：

SUPERHIGH CURIE POINTS; PIEZOELECTRIC CERAMICS; CRYSTAL-STRUCTURE; SOLID-SOLUTIONS;

D O I：

10.1111/jace.12121

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：

This work revealed that the solid solution compounds of Sr2xBaxNb2O7 are promising lead-free materials for high-temperature piezoelectric sensor application. These compounds were confirmed as ferroelectric materials with high Curie points (> 900 degrees C) by their piezoelectric activity after poling, ferroelectric domain switching in their PE hysteresis loops and thermal depoling behavior. The effect of Ba substitution on the structure and properties of Sr2xBaxNb2O7 (x<1.0) was investigated. The solid solution limit of Sr2xBaxNb2O7 was determined by XRD as x<0.6. The a-, b-, c- axes, and cell volume increase with Ba addition. The textured ceramics of Sr2xBaxNb2O7 were prepared for the first time. The highest d33 was measured as 3.6 +/- 0.1pC/N for Sr1.8Ba0.2Nb2O7.

引用

页码：1163 / 1170

页数：8

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