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Integrated Ferroelectrics
An International Journal
Volume 78, 2006 - Issue 1
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SECTION A2: MODELING AND THEORY

SIMULATION OF DOMAIN PATTERNS IN FATIGUED FERROELECTRIC FILMS

C. L. WANG School of Physics and Microelectronics, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
,
J. C. LI School of Physics and Microelectronics, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
,
M. L. ZHAO School of Physics and Microelectronics, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
,
K. YANG School of Physics and Microelectronics, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
,
X. Y. WANG School of Physics and Microelectronics, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
&
J. L. ZHANG School of Physics and Microelectronics, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
Pages 69-73 | Received 17 Apr 2005, Accepted 23 Jan 2006, Published online: 12 Oct 2011
 
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ABSTRACT

A modified diffused limited aggregation model (mDLA) and Ising model has been proposed on a two dimension 200 × 100 lattice for investigating the physical property in a fatigued ferroelctric thin film. Firstly mDLA is used to generate the dendritic pattern. Then a spin-1/2 Ising model is implemented in the lattice to represent the dipole array in the films. Monte Carlo method has been employed in the simulations. Domain patterns as well as hysteresis loop have been obtained. It was found that the polarization could be easily reversed around the dendrite sites, which leads to a chopped shoulder in the hysteresis loop.

ACKNOWLEDGMENT

Financial support from National Natural Science Foundation of China under Project No. 10474057 is gratefully acknowledged.

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