Exact results of a mixed spin-1/2 and spin-S Ising model on a bathroom tile (4-8) lattice:: Effect of uniaxial single-ion anisotropy

被引：116
|
作者：
Strecka, J [1 ]
机构：
[1] Safarik Univ, Dept Theoret Phys & Astrophys, Fac Sci, Kosice 04001, Slovakia
来源：
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2006年 / 360卷 / 02期
关键词：
Ising model; bathroom tile lattice; mixed-spin; exact results;
D O I：
10.1016/j.physa.2005.07.012
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Effect of uniaxial single-ion anisotropy upon magnetic properties of a mixed spin-1/2 and spin-S (S >= 1) Ising model on a bathroom tile (4-8) lattice is examined within the framework of an exact star-triangle mapping transformation. Particular attention is focused on the phase diagrams established for several values of the quantum spin number S. It is shown that the mixed-spin bathroom tile lattice exhibits very similar phase boundaries as the mixed-spin honeycomb lattice whose critical points are merely slightly enhanced with respect to the former ones. The influence of uniaxial single-ion anisotropy upon the total magnetization vs. temperature dependence is particularly investigated as well. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：379 / 390
页数：12
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