Computer simulation of 90 ° ferroelectric domain formation in two-dimensions

doi:10.1016/S0921-5093(97)00453-X

Materials Science and Engineering: A

Volume 238, Issue 1, 30 October 1997, Pages 182-191

https://doi.org/10.1016/S0921-5093(97)00453-X Get rights and content

Abstract

The dynamics of 90 ° domain formation during a ferroelectric phase transition is studied using a computer simulation model based on time-dependent Ginzburg-Landau (TDGL) equations. This model does not make a priori assumptions on the domain morphologies and their evolution path, and takes into account simultaneously the non-local elastic and electric dipole-dipole interactions, and the local interactions resulting in the domain-wall energy. A two-dimensional system is considered. The domain structure is described by a vector polarization field whose temporal and spatial equation is obtained by numerically solving the TDGL equations in Fourier space. It is shown that both the non-local elastic and electric dipole-dipole interactions are critical in order to explain the experimental observation which demonstrated that tail-to-head or head-to-tail arrangement of dipoles at twin boundaries.

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Computer simulation of 90 ° ferroelectric domain formation in two-dimensions

Abstract

Principles and Applications of Ferroelectrics and Related Materials

Polar Dielectrics and Their Applications

J. Mater. Sci

Science

Phys. Rev.

Theory of Structural Transformations in Solids

Metall. Trans. A

Metall. Trans. A