A MODEL FOR THERMAL SPIN RELAXATION IN ROTATING FERROMAGNETIC CLUSTERS

被引：5

作者：

BECKER, JA

机构：

[1] PHILIPPS UNIV,WISSENSCH ZENTRUM MAT WISSENSCH,D-35032 MARBURG,GERMANY

[2] PHILIPPS UNIV,INST PHYS CHEM,D-35032 MARBURG,GERMANY

来源：

ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS | 1994年 / 29卷 / 04期

关键词：

05.40; 33.30;

D O I：

10.1007/BF01437849

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

A model for thermal spin relaxation in isolated ferromagnetic clusters is proposed and investigated theoretically by means of nonequilibrium thermodynamics. It is shown that thermal agitation mediates relaxation of the spin towards the total angular momentum vector of the cluster so that the clusters are magnetically polarized in the direction of their rotational axis. A relaxation mechanism via thermal moment of inertia fluctuations is proposed. The results are discussed for a Fe125-cluster.

引用

页码：299 / 307

页数：9

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[2]

BALLONE P, 1991, PHYS REV B, V44, P1035

[3]

BEAN CP, 1959, J APPL PHYS, V30, pS120, DOI DOI 10.1063/1.2185850

[4] THE FERROMAGNETISM OF IRON AND NICKEL CLUSTERS IN A MOLECULAR-BEAM [J].