Macroscopic elastic and electric fields in ferroelectrics: Phenomenology and simulations

A 3D solution for electrostriction govemed elastic field is obtained in terms of integral transformations. In particular, the nonlocal elastic interaction term in the free energy functional is derived for any point symmetry. Applicability of the free energy functional to phenomena specific to ferroe...

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Bibliographic Details
Published in:Ferroelectrics 1999-12, Vol.235 (1), p.97-110
Main Authors: Klotins, E., Stemberg, A., Kundzins, K.
Format: Article
Language:English
Subjects:
elastic field
ferroelectrics
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Summary:A 3D solution for electrostriction govemed elastic field is obtained in terms of integral transformations. In particular, the nonlocal elastic interaction term in the free energy functional is derived for any point symmetry. Applicability of the free energy functional to phenomena specific to ferroelectric relaxors is discussed and the role of multiplicative noise emphasised. A simplified model potential is used to demonstrate the contribution of fluctuations to external field controlled domain reorientation.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150199908214870