Phase Field Simulations of Hysteresis and Butterfly Loops in Ferroelectrics Subjected to Electro-Mechanical Coupled Loading

Two‐dimensional computer simulations of ferroelectric polarization switching have been performed using the phase field simulation model developed by employing the time‐dependent Ginsburg–Landau equations. The bulk‐free energy, polarization gradient energy, long‐range dipole–dipole electrostatic inte...

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Bibliographic Details
Published inJournal of the American Ceramic Society Vol. 89; no. 2; pp. 652 - 661
Main Authors Soh, A. K., Song, Y. C., Ni, Y.
Format Journal Article
LanguageEnglish
Published Malden, USA Blackwell Science Inc 01.02.2006
Blackwell
Wiley Subscription Services, Inc
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Summary:Two‐dimensional computer simulations of ferroelectric polarization switching have been performed using the phase field simulation model developed by employing the time‐dependent Ginsburg–Landau equations. The bulk‐free energy, polarization gradient energy, long‐range dipole–dipole electrostatic interactions, and elastic energy were taken into account in the above‐mentioned simulations. The influences of electric–mechanical coupled loading on the hysteresis and butterfly loops were studied. The results showed that the coupled electro‐mechanical loading could change both the coercive field of ferroelectric materials and the symmetry of hysteresis and butterfly loops.
Bibliography:istex:F2A188845EA832F27704A93C755B4BDBD69E47B2
ark:/67375/WNG-DHDG8QGD-8
ArticleID:JACE00724

This work was supported from the Research Grants Council of the Hong Kong Special Administrative Region, China (Project no. HKU 7086/02E).
L.‐Q. Chen—contributing editor
Key Laboratory of Mechanical Behavior and Design of Materials, CAS, and Department of Modern Mechanics, University of Science and Technology of China, Hefei, China.
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ISSN:0002-7820
1551-2916
DOI:10.1111/j.1551-2916.2005.00724.x