Dipole alignment and dielectric susceptibility of defective ferroelectric: Monte-Carlo simulation

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	Dipole alignment and dielectric susceptibility of defective ferroelectric: Monte-Carlo simulation
	J. M. Liu; K. F. Wang; S. T. Lau; H. L. W. Chan; C. L. Choy
	2005
发表期刊	Computational Materials Science
ISSN	0927-0256
卷号	33 期号:1-3 页码:66-73
摘要	We present a Monte-Carlo simulation on the dipole alignment configuration and dielectric susceptibility of a defective ferroelectric lattice with randomly distributed lattice defects in the framework of the Ginzburg-Landau theory. These defects are assumed to suppress locally the electric dipoles. It is found that with increasing defect concentration the dipole lattice configuration evolves from a normal ferroelectric state to a two-phase coexisted state, where highly polarized regions are embedded in a paraelectric matrix. The dielectric susceptibility in lattices with various defect distributions is studied. The simulated results are used to explain the measured dielectric response in ferroelectric copolymers containing defects induced by proton irradiation. (c) 2004 Elsevier B.V. All rights reserved.
部门归属	hong kong polytech univ, dept appl phys, kowloon, hong kong, peoples r china. nanjing univ, solid state microstruct lab, nanjing 210093, peoples r china. chinese acad sci, int ctr mat phys, shenyang, peoples r china.;liu, jm (reprint author), hong kong polytech univ, dept appl phys, kowloon, hong kong, peoples r china;liujm@nju.edu.cn
关键词	Dielectric Susceptibility Random Defect Model Ferroelectric Relaxor Lead Magnesium Niobate Relaxor Ferroelectrics Computer-simulation Domain Formation Behavior Titanate Glass
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34940
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. M. Liu,K. F. Wang,S. T. Lau,et al. Dipole alignment and dielectric susceptibility of defective ferroelectric: Monte-Carlo simulation[J]. Computational Materials Science,2005,33(1-3):66-73.
APA	J. M. Liu,K. F. Wang,S. T. Lau,H. L. W. Chan,&C. L. Choy.(2005).Dipole alignment and dielectric susceptibility of defective ferroelectric: Monte-Carlo simulation.Computational Materials Science,33(1-3),66-73.
MLA	J. M. Liu,et al."Dipole alignment and dielectric susceptibility of defective ferroelectric: Monte-Carlo simulation".Computational Materials Science 33.1-3(2005):66-73.