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Published March 15, 2007 | public
Journal Article

A model for large electrostrictive actuation in ferroelectric single crystals


A new mode of large electrostrictive actuation, based on 90° domain switching in ferroelectric crystals subjected to combined electromechanical loading, has recently been experimentally demonstrated. In this paper, we develop a model for this phenomenon by assuming a reasonable arrangement of domain walls and formulating equations of motion for these walls. The model captures most of the features observed in the experiments, reveals the significant role of friction at the interfaces between the loading frame and the crystal surfaces, and predicts that a reduction of friction will allow larger strains at lower mechanical loads.

Additional Information

© 2006 Elsevier Ltd. Received 13 June 2006. Guest Editor: T. Nakamura. Available online 3 August 2006. We are grateful for the research support provided by the US Army Research Office (DAAD-19-01-1-0517) through a MURI on Engineered Microstructural Complexity in Ferroelectric Devices. D.S. is grateful for the financial support of the Israeli Science Foundation (ISF contract 437/05).

Additional details

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