Monte Carlo simulation on dielectric and ferroelectric behaviors of relaxor ferroelectrics

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	Monte Carlo simulation on dielectric and ferroelectric behaviors of relaxor ferroelectrics
	X. Wang; J. M. Liu; H. L. W. Chan; C. L. Choy
	2004
发表期刊	Journal of Applied Physics
ISSN	0021-8979
卷号	95 期号:8 页码:4282-4290
摘要	The dielectric and ferroelectric behaviors of relaxor ferroelectrics over the ferroelectric transition range are simulated using Monte Carlo simulation. The simulation is based on the Ginzburg-Landau ferroelectric model lattice in which a random distribution of two types of defects (dopants) which will suppress and enhance the local polarization, respectively, is assumed. The simulation reveals an evolution of the ferroelectric transitions from a normal first-order mode toward a diffusive mode, with increasing defect concentration. The simulated lattice configuration shows the microdipole ordered clusters embedded in the matrix of paraelectric phase over a wide range of temperature, a characteristic of relaxor ferroelectrics. The relaxor-like behaviors are confirmed by the lattice free energy, dielectric susceptibility, and ferroelectric relaxation evaluated as a function of the defect concentration. Finally, we present a qualitative comparison of our simulated results with the simulation based on the coarse-grain model [C. C. Su, B. Vugmeister, and A. G. Khachaturyan, J. Appl. Phys. 90, 6345 (2001)]. (C) 2004 American Institute of Physics.
部门归属	nanjing univ, solid state microstruct lab, nanjing 210093, peoples r china. hong kong polytech univ, dept appl phys, hong kong, hong kong, peoples r china. chinese acad sci, int ctr mat phys, shenyang, peoples r china.;liu, jm (reprint author), nanjing univ, solid state microstruct lab, nanjing 210093, peoples r china;liujm@nju.edu.cn
关键词	Diffuse Phase-transitions Random-field Domain Formation Proton-glass Perovskites States Polarization Ceramics Defects
URL	查看原文
WOS记录号	WOS:000220586100060
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/35593
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. Wang,J. M. Liu,H. L. W. Chan,et al. Monte Carlo simulation on dielectric and ferroelectric behaviors of relaxor ferroelectrics[J]. Journal of Applied Physics,2004,95(8):4282-4290.
APA	X. Wang,J. M. Liu,H. L. W. Chan,&C. L. Choy.(2004).Monte Carlo simulation on dielectric and ferroelectric behaviors of relaxor ferroelectrics.Journal of Applied Physics,95(8),4282-4290.
MLA	X. Wang,et al."Monte Carlo simulation on dielectric and ferroelectric behaviors of relaxor ferroelectrics".Journal of Applied Physics 95.8(2004):4282-4290.