Investigation of the crossover properties for the interaction parameters of a ferroelectric thin film

被引：16
|
作者：
Lu, Z. X. [1 ]
Teng, B. H. [1 ]
Lu, X. H. [1 ]
Zhang, X. J. [1 ]
Wang, C. D. [1 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Phys Elect, Chengdu 610054, Peoples R China
来源：
SOLID STATE COMMUNICATIONS | 2009年 / 149卷 / 29-30期
关键词：
Ferroelectrics; Phase diagram; TRANSVERSE ISING-MODEL; PHASE-TRANSITION PROPERTIES; DIELECTRIC-PROPERTIES; 4-SPIN INTERACTION; DIAGRAMS; SUPERLATTICE; SYSTEM; LAYERS; FIELD;
D O I：
10.1016/j.ssc.2009.04.030
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The crossover feature, from the ferroelectric-dominant phase diagram (FPD) to the paraelectric-dominant phase diagram (PPD), for the interaction parameters of a ferroelectric thin film described by the transverse Ising model have been calculated in detail by the use of the mean-field approximation. The crossover values of the exchange interactions and the transverse fields for a thin film with certain layers are displayed as a curved surface in the three-dimensional parameter space. The numerical results show that for thin films with different numbers of layers there exists a common intersection line for the curved surfaces of the crossover values. Meanwhile the layer-independent equation for the intersection line is obtained for the first time. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1176 / 1179
页数：4
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