Phase diagram of a mixed spin-1 and spin-3/2 Ising ferrimagnet

被引：39

作者：

Zukovic, M. ^{[1
]}

Bobak, A. ^{[1
]}

机构：

[1] Safarik Univ, Fac Sci, Dept Theoret Phys & Astrophys, Kosice 04154, Slovakia

来源：

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2010年 / 389卷 / 23期

关键词：

Ferrimagnet; Mixed-spin system; Phase diagram; Ising model; Monte Carlo simulation; Compensation temperature; SINGLE-ION ANISOTROPIES; MONTE-CARLO; SYSTEM; MODEL; FIELD; FERROMAGNET; LATTICE; TRANSITIONS;

D O I：

10.1016/j.physa.2010.08.012

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Critical and compensation properties of a mixed spin-1 and spin-3/2 Ising ferrimagnet on a square lattice are investigated by standard and histogram Monte Carlo simulations. The critical temperature is studied as a function of single-ion anisotropy strength. The second order of the phase transition is established by finite-size scaling for the entire boundary. Some previously obtained results, such as a tricritical point, predicted by the mean field theory (MET) and the effective field theory (EFT), or a first-order transition line separating two different ordered phases, obtained by the cluster variational theory (CVT), are deemed artifacts of the respective approximations. So is a re-entrant phenomenon produced by CVT. Nevertheless, the multicompensation behavior predicted by MET and ERT was confirmed. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：5402 / 5407

页数：6

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