Journal
THIN SOLID FILMS
Volume 519, Issue 17, Pages 5808-5810Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2010.12.192
Keywords
Ferroelectric; Thin films; Vortex; Landau theory
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The distribution of polarization in thin film of multicomponent weak anisotropic ferroelectric under application of an axially symmetric electric field induced by circular electrodes is studied. We demonstrate that above a certain critical field the instability towards abrupt formation of ferroelectric vortex state appears. The polarization distribution in the vortex state exhibits a doughnut shape in agreement with experimental data. (C) 2010 Published by Elsevier B.V.
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