Shear-mode piezoelectric properties of 0.69Pb(Mg1/3Nb2/3)O3-0.31PbTiO3 single crystals

被引：25

作者：

Peng, J

Chen, JZ

Lu, HS

He, TH

Xu, HQ

Lin, D

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 201800, Peoples R China

[2] China Univ Geosci, Grad Sch, Wuhan 430074, Hubei, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 2004年 / 130卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

PMN-PT; single crystals; shear-mode; piezoelectric properties;

D O I：

10.1016/j.ssc.2004.01.009

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In this paper, 0.69Pb(Mg1/3Nb1/3)O-3-0.31PbTiO(3) (PMNT69/31) single crystals have been investigated on their shear-mode piezoelectric properties as a function of crystal orientation and electrode material using resonance techniques. Three types of electrodes. coated graphite and sputtered Au or Cu, were applied. It was found that the largest stress is produced by applying a field along the <110> direction combined with a poling along the <111> direction. In this case, piezoelectric coefficients d(15), g(15) and electromechanical coupling coefficient k(15) had values of 3689 pC/N, 0.0318 V m/N and 93.3%, respectively, for samples with graphite electrode. However, much better piezoelectric properties with d(15), g(15), and k(15) of 5980 pC/N, 0.056 V m/N and 97.0%. respectively, were obtained as the samples with Cu electrode. Our results suggest that these <111>-oriented crystals are promising materials for shear transducer. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：53 / 57

页数：5

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