Tricritical behavior of mixed spin-2 and spin-5/2 ferrimagnetic Ising system with interlayer coupling

被引：15
|
作者：
Wei, Guozhu
Zhang, Qi [1 ]
Zhao, Jie
Gu, Yongwei
机构：
[1] NE Univ, Coll Sci, Shenyang 110006, Peoples R China
[2] Acad Sinica, Int Ctr Mat Phys, Shenyang 110015, Peoples R China
来源：
PHYSICA B-CONDENSED MATTER | 2006年 / 381卷 / 1-2期
关键词：
tricritical point; Ising system; interlayer coupling; crystal field; effective-field theory with correlations;
D O I：
10.1016/j.physb.2005.11.167
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Tricritical points of layer Ising system consisting of mixed spin-2 and spin-5/2 ferrimagnetic honeycomb lattice layers which are coupled together with two kinds of positive interlayer coupling are examined by the use of the effective-field theory with correlations. In particular, the effects of interlayer coupling and crystal-field constants of the spin-2 ions and spin-5/2 ions on the tricritical points are investigated, in order to clarify the characteristic behavior of the first-order phase transitions and the second-order phase transitions of the system. (c) 2006 Elsevier B.V. All rights reserved.
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收藏
页码：6 / 11
页数：6
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