Effects of orientation and composition on the extrinsic contributions to the dielectric response of relaxor-ferroelectric single crystals

被引：20

作者：

Bernal, Ashley ^{[1
]}

Zhang, Shujun ^{[2
]}

Bassiri-Gharb, Nazanin ^{[1
,3
]}

机构：

[1] Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA

[2] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA

[3] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 14期

关键词：

PHASES;

D O I：

10.1063/1.3245316

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The dielectric response of (1-x)Pb(Zn1/3Nb2/3)O-3-xPbTiO(3) (PZN-x% PT, 4.5 <= x <= 12) single crystals is reported for ac field amplitudes up to similar to 2 kV/cm at 1 kHz. The Rayleigh law is used to study the dielectric nonlinear response. It is found that the extrinsic contributions are extremely anisotropic. Rhombohedral crystals poled along [001](C) showed enhanced extrinsic contributions to their dielectric response with respect to those poled along [111](C), while in tetragonal crystals, the enhancement was observed for poling along [111](C) rather than along [001](C). This is attributed to "domain engineering" or higher domain wall concentrations in ferroelectric crystals poled along nonpolar axes. (C) 2009 American Institute of Physics. [doi:10.1063/1.3245316]

引用

页数：3

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