TU Darmstadt / ULB / TUbiblio

Thermodynamic consistent modelling of defects and microstructures in ferroelectrics

Müller, Ralf and Schröder, Jörg and Lupascu, Doru C. (2008):
Thermodynamic consistent modelling of defects and microstructures in ferroelectrics.
In: GAMM-Mitteilungen, pp. 133-1508, 31, (2), ISSN 09367195,
[Online-Edition: http://dx.doi.org/10.1002/gamm.200890007],
[Article]

Abstract

The paper describes the main phenomena associated with fatigue in ferroelectricmaterials due to defects and microstructural effects. An analysis the modelling on different length scales is presented. Starting from a thermodynamic analysis of the macroscopic material behavior other microscopic aspects are addressed. The introduction of an orientation distribution function allows for a computationally efficient extension of a single crystal model to realistic 3D structures. Additionally, the thermodynamic treatment of defects and domain wall motion is discussed to provide a better understanding of various micro-mechanisms. It is explained by the concept of configurational/driving forces, how defects influence each other and how the mobility of domain walls is reduced in the presence of defects.

Item Type: Article
Erschienen: 2008
Creators: Müller, Ralf and Schröder, Jörg and Lupascu, Doru C.
Title: Thermodynamic consistent modelling of defects and microstructures in ferroelectrics
Language: English
Abstract:

The paper describes the main phenomena associated with fatigue in ferroelectricmaterials due to defects and microstructural effects. An analysis the modelling on different length scales is presented. Starting from a thermodynamic analysis of the macroscopic material behavior other microscopic aspects are addressed. The introduction of an orientation distribution function allows for a computationally efficient extension of a single crystal model to realistic 3D structures. Additionally, the thermodynamic treatment of defects and domain wall motion is discussed to provide a better understanding of various micro-mechanisms. It is explained by the concept of configurational/driving forces, how defects influence each other and how the mobility of domain walls is reduced in the presence of defects.

Journal or Publication Title: GAMM-Mitteilungen
Volume: 31
Number: 2
Uncontrolled Keywords: Ferroelectrics; defects; invariant theory; micromechanics
Divisions: 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: 16 Aug 2011 14:23
Official URL: http://dx.doi.org/10.1002/gamm.200890007
Additional Information:

SFB 595 Cooperation B5, C3

Identification Number: doi:10.1002/gamm.200890007
Export:
Suche nach Titel in: TUfind oder in Google

Optionen (nur für Redakteure)

View Item View Item