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Micromechanical analysis of ferroelectric structures by a phase field method

Xu, Bai-Xiang and Schrade, David and Mueller, Ralf and Gross, Dietmar (2009):
Micromechanical analysis of ferroelectric structures by a phase field method.
In: Computational Materials Science, 45 (3), pp. 832-836, ISSN 09270256,
[Online-Edition: http://dx.doi.org/10.1016/j.commatsci.2008.07.010],
[Article]

Abstract

A continuum phase field model for polarization and domain structure evolution in ferroelectric materials is presented along with its 2D implementation in the finite element method. A thermodynamically consistent constitutive law and evolution equations are obtained by introducing the spontaneous polarization as an order parameter and including configurational forces in the thermodynamic analysis. Numerical examples are given for microstructure evolution and the mesoscopic response of the material, and electro-mechanical fields of a ferroelectric stack actuator are calculated. Comparisons with experimental measurements and phenomena show good agreement.

Item Type: Article
Erschienen: 2009
Creators: Xu, Bai-Xiang and Schrade, David and Mueller, Ralf and Gross, Dietmar
Title: Micromechanical analysis of ferroelectric structures by a phase field method
Language: English
Abstract:

A continuum phase field model for polarization and domain structure evolution in ferroelectric materials is presented along with its 2D implementation in the finite element method. A thermodynamically consistent constitutive law and evolution equations are obtained by introducing the spontaneous polarization as an order parameter and including configurational forces in the thermodynamic analysis. Numerical examples are given for microstructure evolution and the mesoscopic response of the material, and electro-mechanical fields of a ferroelectric stack actuator are calculated. Comparisons with experimental measurements and phenomena show good agreement.

Journal or Publication Title: Computational Materials Science
Volume: 45
Number: 3
Uncontrolled Keywords: Ferroelectrics; Phase field model; Finite element method; Microstructure; Hysteresis loops
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > C - Modelling
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > C - Modelling > Subproject C3: Microscopic investigations into defect agglomeration and its effect on the mobility of domain walls
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 16 Aug 2011 14:26
Official URL: http://dx.doi.org/10.1016/j.commatsci.2008.07.010
Additional Information:

SFB 595 C3

Identification Number: doi:10.1016/j.commatsci.2008.07.010
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