Effect of random crystal field on semi infinite system

被引：7

作者：

Benayad, M. R. ^{[1
]}

Benyoussef, A. ^{[1
,2
,3
]}

El Kenz, A. ^{[1
]}

机构：

[1] Fac Sci Rabat, LMPHE, URAC 12, Dept Phys, Rabat, Morocco

[2] Hassan II Acad Sci & Technol, Rabat, Morocco

[3] MAScIR, Inst Nanomat & Nanotechnol, Rabat, Morocco

来源：

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2012年 / 391卷 / 12期

关键词：

Semi-infinite; Random crystal-field; Ferromagnetism; Tricritical point; Multicritical point; Mean field approximation; RENORMALIZATION-GROUP APPROACH; 2-DIMENSIONAL ISING-MODEL; BULK CURIE-TEMPERATURE; EMERY-GRIFFITHS MODEL; BLUME-CAPEL MODEL; CRITICAL-BEHAVIOR; FREE-SURFACE; PHASE-TRANSITIONS; SEMIINFINITE SYSTEMS; MAGNETIC-PROPERTIES;

D O I：

10.1016/j.physa.2012.01.044

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effect of random crystal-field on the magnetic properties of the semi-infinite system is investigated by the use of the mean field approximation. In this system, the sites of the surface and bulk are occupied by spin-1/2 and spin-1, respectively. The appearance of the partly ferromagnetic phase, in bulk, gives rise to different types of topology of phase diagrams. The system exhibits tricritical and multicritical points. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：3467 / 3476

页数：10

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