Polarization rotation contributions to dielectric nonlinearity in 65Pb(Mg1/3Nb2/3)O3-35PbTiO3 single crystals

被引：7

作者：

Bernal, Ashley ^{[1
]}

Bassiri-Gharb, Nazanin ^{[1
,2
]}

机构：

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

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

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 04期

关键词：

dielectric hysteresis; dielectric polarisation; electric domain walls; ferroelectric transitions; lead compounds; relaxor ferroelectrics; PHASE;

D O I：

10.1063/1.3187916

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The dielectric response of 65Pb(Mg1/3Nb2/3)O-3-35PbTiO(3) (PMN-35PT) single crystals is reported for ac field amplitudes up to similar to 3.5 kV/cm over a frequency range from 3 Hz to 1 kHz. The nonlinear dielectric response is described by a Rayleigh-like analysis, indicating extrinsic contributions from nonlinear and hysteretic motion of internal interfaces (phase boundaries and domain walls). Furthermore, the extrinsic contributions are more than five times higher in the [110]- and [001]-poled crystals than crystals poled along the [111] axis. This is attributed to the ease of the polarization vector rotation along the M-C mirror plane between orthorhombic and tetragonal phases of PMN-35PT.

引用

页数：3

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