期刊
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
卷 444, 期 -, 页码 589-600出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physa.2015.10.089
关键词
Mixed-spin Ising model; Random-crystal field; Tricritical point
资金
- FAPEMAT [685524/2010]
- CAPES [002/2012]
- CNPq [307487/2014-8]
We study the mixed spin-1 and spin-3/2 ferrimagnetic Ising system under the effect of different random crystal-fields within the mean-field theory based on the Bogoliubov inequality for the Gibbs free energy. The phase diagrams are obtained in the plane of critical temperature versus random crystal-field, showing a tricritical behavior with second-order transition lines separating the first-order transition lines by tricritical points. (C) 2015 Elsevier B.V. All rights reserved.
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