Computer simulation of thermal fluctuation of fine particle magnetization based on Langevin equation

被引：50

作者：

Nakatani, Y ^{[1
]}

Uesaka, Y ^{[1
]}

Hayashi, N ^{[1
]}

Fukushima, H ^{[1
]}

机构：

[1] CONTROL RES LABS,KOKUBUNJI,TOKYO 185,JAPAN

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1997年 / 168卷 / 03期

关键词：

thermal fluctuation after-effect; Langevin equation; computer simulation; micromagnetics;

D O I：

10.1016/S0304-8853(96)00725-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thermal fluctuation after-effect is simulated using the Langevin equation. The relations between the number of reversals of a fine magnetic particle and the material parameters are investigated, and an experimental formula, p = 60 alpha/(1 + alpha(2)) exp((-k(u)v(0.979))/(kT)) is obtained for the transition probability due to the thermal fluctuation aftereffect. The formula is found to depend on the damping constant and the transition probability is 30 times as large as that predicted theoretically.

引用

页码：347 / 351

页数：5

共 10 条

[1] THERMAL FLUCTUATIONS OF A SINGLE-DOMAIN PARTICLE [J].