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
收藏
页码：3467 / 3476
页数：10
相关论文
共 57 条
[1]   Edge critical behaviour of the two-dimensional tri-critical Ising model [J].
Affleck, I .
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 2000, 33 (37) :6473-6479
[2]   Gd(0001):: A semi-infinite three-dimensional heisenberg ferromagnet with ordinary surface transition [J].
Arnold, CS ;
Pappas, DP .
PHYSICAL REVIEW LETTERS, 2000, 85 (24) :5202-5205
[3]   THERMODYNAMICS OF AN ANISOTROPIC BOUNDARY OF A 2-DIMENSIONAL ISING-MODEL [J].
AUYANG, H .
JOURNAL OF MATHEMATICAL PHYSICS, 1973, 14 (07) :937-946
[4]   WALL EFFECTS IN CRITICAL SYSTEMS - SCALING IN ISING-MODEL STRIPS [J].
AUYANG, H ;
FISHER, ME .
PHYSICAL REVIEW B, 1980, 21 (09) :3956-3970
[5]   Random crystal-field effect on the spin-3/2 Blume-Capel model [J].
Bahmad, L. ;
Benyoussef, A. ;
El Kenz, A. .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2008, 320 (3-4) :397-402
[6]   The Effect of a Random Crystal-Field on the Mixed Ising Spins (1/2,3/2) [J].
Bahmad, L. ;
Benayad, M. R. ;
Benyoussef, A. ;
El Kenz, A. .
ACTA PHYSICA POLONICA A, 2011, 119 (06) :740-746
[7]   Effects of a random crystal field on the spin-2 Blume-Capel model [J].
Bahmad, L. ;
Benyoussef, A. ;
El Kenz, A. .
PHYSICAL REVIEW B, 2007, 76 (09)
[8]   Renormalization-group approach to surface critical behavior in the semi-infinite spin-3/2 Blume-Emery-Griffiths model [J].
Bakchich, A ;
El Bouziani, M .
PHYSICAL REVIEW B, 2001, 63 (06)
[9]   Magnetic properties of the mixed-spin Ising ferromagnet with a ferrimagnetic surface [J].
Benayad, N ;
Dakhama, A .
PHYSICAL REVIEW B, 1997, 55 (18) :12276-12289
[10]   SURFACE MAGNETIC-PROPERTIES OF AN ANISOTROPIC FREE-SURFACE IN THE SEMIINFINITE ISING-MODEL [J].
BENYOUSSEF, A ;
ELKENZ, A ;
EZZAHRAOUY, H .
PHYSICA A, 1993, 193 (01) :123-132
123456