Aging-induced giant recoverable electrostrain in Fe-doped 0.62Pb(Mg1/3Nb2/3)O3-0.38PbTiO3 single crystals

被引：22
作者：
Feng, Zuyong [1 ]
Tan, O. K. [1 ]
Zhu, Weiguang [1 ]
Jia, Yanmin [2 ]
Luo, Haosu [2 ]
机构：
[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore
[2] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 201800, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 14期
关键词：
D O I：
10.1063/1.2908230
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The aging effect of a 0.2 mol % Fe-doped 0.62Pb(Mg1/3Nb2/3)O-3-0.38PbTiO(3) single crystal was investigated. The authors found that aging induced a double ferroelectric hysteresis loop and a giant recoverable electrostrain of 0.8% at an electric field of 1.2 kV/mm in the < 001 >-oriented tetragonal crystal. This result is much higher than the strains obtained in crystals near the morphotropic phase boundary under the same field. Such aging effect is attributed to a point-defect-mediated reversible domain-switching mechanism. Large electrostrains (>0.55%) at 1.2 kV/mm for a broad temperature from room temperature to 160 degrees C suggest that the aged single crystal is a promising electromechanical material. (C) 2008 American Institute of Physics.
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