Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/31565
Title: Monte-carlo simulation on the dipole alignment in ferroelectric square lattice
Authors: Liu, JM
Wang, X
Chan, HLW 
Choy, CL 
Keywords: Domain walls
Ginzburg-Landau model
Monte-Carlo simulation
Issue Date: 2004
Publisher: Elsevier
Source: Materials science and engineering. B, Solid-state materials for advanced technology, 2004, v. 113, no. 1, p. 67-72 How to cite?
Journal: Materials science and engineering. B, Solid-state materials for advanced technology 
Abstract: The dipole alignment configuration in a multi-domained ferroelectric lattice of cubic symmetry is simulated using the Monte-Carlo method based on the Ginzburg-Landau model. It is revealed that the gradient energy associated with the spatial discontinuity of the dipole alignment near the domain walls results in not only 90° -domain configuration, but also distorted dipole alignment. The simulation shows that such a distorted alignment pattern is thermodynamically preferred at low temperature. The effect of the alignment distortion on the ferroelectric phase transition is discussed. It is found that a state number Q = 16 is enough for a reliable simulation of the distorted alignment of dipoles.
URI: http://hdl.handle.net/10397/31565
ISSN: 0921-5107
DOI: 10.1016/j.mseb.2004.06.019
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