Cluster expansion for the spin-3/2 Blume-Capel model

被引：19

作者：

Ilkovic, V

机构：

[1] Dept. of Theor. Phys. and Geophysics, Faculty of Natural Sciences, 041 54 Košice

来源：

PHYSICA A | 1996年 / 234卷 / 1-2期

关键词：

D O I：

10.1016/S0378-4371(96)00289-0

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The two-spin cluster approximation in the cluster expansion method is applied for the spin-3/2 Blume-Capel model on the simple cubic lattices. Within this framework the phase diagram and the temperature dependence of the magnetization are obtained. We have found in the ordered phase a first-order line ending at an isolated critical point in the midst of an ordered phase (coexistence of two critical phases). The results are in qualitative agreement with the results of the molecular field approximation.

引用

收藏

页码：545 / 553

页数：9

相关论文

共 11 条

[1] STATISTICAL MECHANICAL THEORY OF FERROMAGNETISM - HIGH DENSITY BEHAVIOR [J].

BROUT, R .

PHYSICAL REVIEW, 1960, 118 (04) :1009-1019

[2]

BROUT R, 1965, MAGNETISM A, V2, P43

[3] LINKED CLUSTER EXPANSIONS IN STATISTICAL THEORY OF FERROMAGNETISM [J].

ENGLERT, F .

PHYSICAL REVIEW, 1963, 129 (02) :567-&

[4] EXPANSION IN 1/Z FOR THE TRANSITION-TEMPERATURE AND SPECIFIC-HEAT OF FERROMAGNETS [J].

FISHMAN, RS ;

LIU, SH .

PHYSICAL REVIEW B, 1989, 40 (16) :11028-11036

[5] PHASE-DIAGRAMS AND HIGHER-ORDER CRITICAL-POINTS [J].

GRIFFITHS, RB .

PHYSICAL REVIEW B, 1975, 12 (01) :345-355

[6] DIAGRAMMATIC EXPANSION FOR ISING MODEL WITH ARBITRARY SPIN AND RANGE OF INTERACTION [J].

HORWITZ, G ;

CALLEN, HB .

PHYSICAL REVIEW, 1961, 124 (06) :1757-+

[7] MAGNETIZATION CURVES OF THE SPIN-3/2 BLUME-CAPEL MODEL [J].

KANEYOSHI, T ;

JASCUR, M .

PHYSICA B, 1992, 179 (04) :317-325

[8] PHASE-DIAGRAM AND PARAMAGNETIC-SUSCEPTIBILITY OF SPIN-3/2 BLUME-CAPEL MODEL IN THE CORRELATED EFFECTIVE-FIELD TREATMENT [J].

LEGAL, G ;

KANEYOSHI, T ;

KHATER, A .

PHYSICA A, 1993, 195 (1-2) :174-187

[9] MAGNETISM IN S = 3/2 ISING SYSTEMS - A SIMPLE-MODEL FOR A TETRACRITICAL POINT [J].

SIVARDIERE, J .

PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1982, 114 (01) :K15-K19

[10] CLUSTER EXPANSION FOR HEISENBERG FERROMAGNET [J].

STRIEB, B ;

HORWITZ, G ;

CALLEN, HB .

PHYSICAL REVIEW, 1963, 130 (05) :1798-&