Exceptionally large piezoelectric strains in BiFeO3-(K0.5Bi0.5)TiO3-PbTiO3 ceramics

被引：27

作者：

Bennett, J. ^{[1
]}

Bell, A. J. ^{[1
]}

Stevenson, T. J. ^{[1
]}

Comyn, T. P. ^{[1
]}

机构：

[1] Univ Leeds, Inst Mat Res, Sch Proc Environm & Mat Engn, Leeds LS2 9JT, W Yorkshire, England

来源：

SCRIPTA MATERIALIA | 2013年 / 68卷 / 07期

基金：

英国工程与自然科学研究理事会;

关键词：

Piezoelectricity; Ferroelectric ceramics; Perovskite; Oxides; X-ray diffraction (XRD); MORPHOTROPIC-PHASE-BOUNDARY; HIGH CURIE-TEMPERATURE; BARIUM-TITANATE; TRANSITION; SYSTEM; PZT;

D O I：

10.1016/j.scriptamat.2012.11.029

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Samples of (1-x-y)BiFeO3-x(K0.5Bi0.5)TiO3-yPbTiO(3), where x = 0.15 and y = 0.275, were produced via a conventional mixed oxide method. Ceramics were characterized using X-ray diffraction, confirming an electric-field-induced phase change from predominantly rhombohedral to mixed phase tetragonal and rhombohedral structure upon poling. There was a remnant polarization of 34 mu C cm(-2) and a total strain of 0.805% at 6.5 kV mm(-1), the highest electric-field-induced strain reported in a polycrystalline material. A d(33) of 205 pm V-1 was measured and Rayleigh analysis was used to quantify the extrinsic contributions. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：491 / 494

页数：4

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