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

页码：379 / 390

页数：12

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