Non-180° domain contributions in Bi0.5(Na0.82K0.18)0.5TiO3 lead-free piezoelectric thick films

被引：10

作者：

Huang, Jinqiang ^{[1
]}

Zhang, Yangyang ^{[2
]}

Jiang, Huacheng ^{[3
]}

Fan, Pengyuan ^{[1
]}

Xiao, Jianzhong ^{[1
]}

Zhang, Haibo ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Coll Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China

[2] Huanghe Sci & Technol Coll, Informat Engn Inst, Zhengzhou 450000, Peoples R China

[3] Chinese Peoples Liberat Army Mil Represent Off Re, Wuhan 430200, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2015年 / 41卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Lead-free piezoelectrics; Thick films; Domain wall motions; Bismuth sodium titanate; Piezoelectric response; ELECTRICAL-PROPERTIES; NONLINEARITY; CERAMICS; PROSPECTS; STRAIN; MOTION; WALLS;

D O I：

10.1016/j.ceramint.2015.04.142

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：

Piezoelectric responses of Bi-0.5(Na0.82K0.18)(0.5)TiO3 (NKBT) ceramic films with thickness of 10-100 mu m have been studied in a wide range of ac electric field and frequency. By the Rayleigh law fit, the typical irreversible Rayleigh coefficient, alpha, for piezoelectric response is 39.69 +/- 0.41 x 10(-18) m(2) V-2, which is much larger than that of the piezoelectric thin films, indicating significantly enhanced non-180 degrees domain wall motions in NKBT thick films. The logarithmic frequency dependence of the piezoelectric response is associated with domain wall pinning in NKBT thick films, and the frequency dispersion increases with increasing ac field amplitude, which is attributed to the relaxation of non-180 degrees domains. (C) 2015 Elsevier Ltd and Team Group S.r.l. All rights reserved.

引用

页码：10506 / 10511

页数：6

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