MAGNETIC-PROPERTIES OF A MIXED SPIN ISING-MODEL WITH RANDOM NEAREST-NEIGHBOR INTERACTIONS

被引：50

作者：

KANEYOSHI, T

机构：

[1] Department of Physics, Nagoya University

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1990年 / 92卷 / 01期

关键词：

D O I：

10.1016/0304-8853(90)90679-K

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic properties of a mixed spin Ising model with random nearest-neighbor interactions on ferromagnetic honeycomb lattice (with spins S = 1 2 and 1) are investigated by the use of the effective-field theory. The interactions are assumed to be independent random variables with distribution p(J1)=pδ(J1j-J1)+(1-p)δ(J1j-J2), where J1>0 and | J 2 J1|≤1. We find a variety of new phenomena induced by the competetion between the random bond and the negative crystal-field interaction, such as a new type of recentrant phenomena in addition to the usual onde due to the frustration of J1J. The physical contents of new phenomena are also classified. © 1990.

引用

页码：59 / 67

页数：9

共 10 条

[1] TWO-DIMENSIONAL MIXED SPIN ISING-MODELS WITH BOND DILUTION AND RANDOM +/--J INTERACTIONS [J].