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Interaction of domain walls with defects in ferroelectric materials

Schrade, David and Müller, Ralf and Gross, Dietmar and Utschig, Thomas and Shur, Vladimir Y. and Lupascu, Doru C. (2007):
Interaction of domain walls with defects in ferroelectric materials.
In: Mechanics of materials, pp. 161-174, 39, (2), [Online-Edition: http://dx.doi.org/10.1016/j.mechmat.2006.04.002],
[Article]

Abstract

A thermodynamic approach is used to derive the driving force on a domain wall in a piezoelectric material. Using 2D finite element simulations, the influence of different kinds of defects on the kinetics of a domain wall in ferroelectric–ferroelastic gadolinium molybdate, Gd2(MoO4)3 (GMO), is studied. Results are compared with experiments conducted on single crystal GMO containing extensive bulk defects. It is found that domain wall movement is impeded for certain defects while it is virtually unaffected for others. Qualitatively, results are in good agreement with experimental findings.

Item Type: Article
Erschienen: 2007
Creators: Schrade, David and Müller, Ralf and Gross, Dietmar and Utschig, Thomas and Shur, Vladimir Y. and Lupascu, Doru C.
Title: Interaction of domain walls with defects in ferroelectric materials
Language: English
Abstract:

A thermodynamic approach is used to derive the driving force on a domain wall in a piezoelectric material. Using 2D finite element simulations, the influence of different kinds of defects on the kinetics of a domain wall in ferroelectric–ferroelastic gadolinium molybdate, Gd2(MoO4)3 (GMO), is studied. Results are compared with experiments conducted on single crystal GMO containing extensive bulk defects. It is found that domain wall movement is impeded for certain defects while it is virtually unaffected for others. Qualitatively, results are in good agreement with experimental findings.

Journal or Publication Title: Mechanics of materials
Volume: 39
Number: 2
Uncontrolled Keywords: Piezoelectric material; Domain wall; Defects; Driving force; Material force; Configurational force; Energy–momentum tensor; Eshelby tensor
Divisions: 13 Department of Civil and Environmental Engineering Sciences
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation > Subproject B5: Model experiments about interactions between ferroelectric domains with point defects and their agglomerates
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 > CRC 595: Electrical fatigue > B - Characterisation
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
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 20 Nov 2008 08:25
Official URL: http://dx.doi.org/10.1016/j.mechmat.2006.04.002
Additional Information:

SFB 595 Cooperation B5, C3

Identification Number: doi:10.1016/j.mechmat.2006.04.002
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