ESTIMATION OF ELECTRONIC AND STRUCTURAL INFLUENCE ON THE THERMAL MAGNETIC-PROPERTIES OF CLUSTERS

被引：18

作者：

LINDGARD, PA ^{[1
]}

HENDRIKSEN, PV ^{[1
]}

机构：

[1] RISO NATL LAB,DEPT MAT,DK-4000 ROSKILDE,DENMARK

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.49.12291

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using an effective Heisenberg model for clusters the spin-wave spectrum is calculated by direct diagonalization. The inclusion of a nonuniform magnetization profile at zero temperature, nonuniform exchange interactions as a result of structural relaxations, longer-range interactions, and of magnetic surface anisotropy have been studied. Very small effects are found on the thermal magnetic properties relative to those predicted for the simple nearest-neighbor Heisenberg model by Hendriksen, Linderoth, and Lindgard [J. Phys. C 31, 5675 (1993); Phys. Rev. B 48, 7259 (1993)].

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页码：12291 / 12294

页数：4

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