Major contributor to the large piezoelectric response in (1-x)Ba(Zr0.2Ti0.8)O3 - x(Ba0.7Ca0.3)TiO3 ceramics: Domain wall motion

被引：126

作者：

Gao, Jinghui ^{[1
,2
]}

Hu, Xinghao ^{[1
]}

Zhang, Le ^{[2
]}

Li, Fei ^{[3
]}

Zhang, Lixue ^{[2
]}

Wang, Yu ^{[2
]}

Hao, Yanshuang ^{[2
,4
]}

Zhong, Lisheng ^{[1
]}

Ren, Xiaobing ^{[2
,4
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China

[2] Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, Multidisciplinary Mat Res Ctr, Xian 710049, Peoples R China

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

[4] Natl Inst Mat Sci, Ferro Phys Grp, Tsukuba, Ibaraki 3050047, Japan

来源：

APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 25期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

LEAD-FREE PIEZOCERAMICS;

D O I：

10.1063/1.4885675

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The piezoelectric activity of lead-free Ba(Zr0.2Ti0.8)O-3-x(Ba0.7Ca0.3)TiO3 (BZT-xBCT) ceramics has been investigated as a function of composition by using Rayleigh analysis under subswitching-electric-field in combination with large-electric-field strain measurement. The result shows that the intrinsic piezoelectric response exhibits peak values in the vicinity of composition-induced R (rhombohedral)-MPB (morphotropic phase boundary) and MPB-T (tetragonal) phase transitions, but being much less than total d(33) value. On the other hand, the extrinsic piezoelectric response, especially the one associated with reversible domain wall motion, has been greatly enhanced in the phase instability regime. Our results indicate that the extrinsic piezoelectric activity is the major contributor to the high piezoelectricity in BZT-xBCT ceramics. (C) 2014 AIP Publishing LLC.

引用

页数：5

共 28 条

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