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

页码：1176 / 1179

页数：4

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