SURFACE EFFECTS IN AN ALTERNATING MAGNETIC SUPERLATTICE

被引：42

作者：

SY, HK

机构：

[1] Department of Physics, National University of Singapore

来源：

PHYSICAL REVIEW B | 1992年 / 45卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.45.4454

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study surface magnetism in a semi-infinite alternating magnetic superlattice. The spin-1/2 Ising model with alternating exchange constants J(A) and J(B) is used in the mean-field approximation. The effects of surface modification on the magnetic properties are expressed in terms of two types of determinants. The numerical results for the critical exchange constants and the surface transition temperatures are obtained for two types of surface modification.

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页码：4454 / 4459

页数：6

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