Nonlinear dielectric response and transient current: An effective potential for ferroelectric domain wall displacement

被引：11

作者：

Jimenez, Rolando Placeres ^{[1
]}

Rino, Jose Pedro ^{[1
]}

Goncalves, Andre Marino ^{[2
]}

Eiras, Jose Antonio ^{[2
]}

机构：

[1] Univ Fed Sao Carlos, Dept Fis, Grp Simulacao Computac, BR-13560 Sao Carlos, SP, Brazil

[2] Univ Fed Sao Carlos, Dept Fis, Grp Ceram Ferroeletr, BR-13560 Sao Carlos, SP, Brazil

来源：

APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 11期

基金：

巴西圣保罗研究基金会;

关键词：

2-DIMENSIONAL DIPOLAR LATTICE; PHASE-CHANGE; CERAMICS; KINETICS; RELAXATION; BATIO3;

D O I：

10.1063/1.4820589

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Ferroelectric domain walls are modeled as rigid bodies moving under the action of a potential field in a dissipative medium. Assuming that the dielectric permittivity follows the dependence epsilon' alpha 1/(alpha + beta E-2), it obtained the exact expression for the effective potential. Simulations of polarization current correctly predict a power law. Such results could be valuable in the study of domain wall kinetic and ultrafast polarization processes. The model is extended to poled samples allowing the study of nonlinear dielectric permittivity under subswitching electric fields. Experimental nonlinear data from PZT 20/80 thin films and Fe+3 doped PZT 40/60 ceramic are reproduced. (C) 2013 AIP Publishing LLC.

引用

页数：4

共 8 条

[1] Domain wall contribution to the nonlinear dielectric response: effective potential model
Placeres-Jimenez, R.
Rino, J. P.
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JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2015, 48 (46)
[2] Time domain response and the data analysis of ferroelectric discharge current
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[3] Dielectric non-Debye domain wall response and aging of SBN:Ce
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[4] Non-Debye domain wall-induced dielectric response in SBN:Ce
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[5] Quantum phase transition and dielectric domain wall response of SrTi18O3
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[8] Effective analysis of time-domain dielectric response for reliable diagnosis of power transformer insulation using statistical parameter evaluated from time-varying model
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