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Ferroelectrics Volume 235, 1999 - Issue 1
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Original Articles

Macroscopic elastic and electric fields in ferroelectrics: Phenomenology and simulations

E. Klotins Institute of Solid State Physics, 8 Kengaraga Street, Riga, LV-1063, Latvia
,
A. Stemberg Institute of Solid State Physics, 8 Kengaraga Street, Riga, LV-1063, Latvia
&
K. Kundzins Institute of Solid State Physics, 8 Kengaraga Street, Riga, LV-1063, Latvia
Pages 97-110 | Received 14 Mar 1999, Published online: 26 Oct 2011
 
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Abstract

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.

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