ON THE RELAXATION OF SMALL MAGNETIC INTERACTING PARTICLES AND THE CONSEQUENCES IN QUANTUM TUNNELING OF MAGNETIZATION

被引：2
作者：
GARCIA, N
LEVANUYK, A
机构：
[1] FISINTEC,E-2800 MADRID,SPAIN
[2] RUSSIAN ACAD SCI,INST CRYSTALLOG,MOSCOW 117333,RUSSIA
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1993年 / 119卷 / 1-2期
关键词：
D O I：
10.1016/0304-8853(93)90512-Z
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We use the mean field approximation to discuss the magnetization relaxation times of coupled small magnetic particles. It is shown, in particular for antiferromagnetic interactions, that the relaxation time decreases for a given temperature in comparison with the noninteracting case. This effect is maximum around the ''ordering temperature'' where the inverse of the logarithm of the relaxation time saturates to a constant value. In this context we discuss also the influence of antiferromagnetic coupling between particles on possible experimental data and its relation to quantum tunneling of the magnetization.
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页码：131 / 134
页数：4
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