Thermal-induced inversion of the magnetic moment in superparamagnetic particles

被引：19

作者：

Denisov, SI ^{[1
]}

Yunda, AN ^{[1
]}

机构：

[1] Sumy State Univ, UA-244007 Sumy, Ukraine

来源：

PHYSICA B | 1998年 / 245卷 / 03期

关键词：

superparamagnetism; magnetic moment; thermal activation;

D O I：

10.1016/S0921-4526(97)00878-8

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The method of description of the stochastic dynamics of a classical magnetic moment using both the direct and the reverse Fokker-Planck equations is developed. The average time of thermal-induced inversion of the magnetic moment in superparamagnetic particles with uniaxial and biaxial magnetic anisotropy is calculated. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：282 / 287

页数：6

共 9 条

[1]

AKHIEZER AI, 1977, METHODS STAT PHYSICS

[2]

[Anonymous], 1968, An introduction to probability theory and its applications

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

BROWN, WF .

PHYSICAL REVIEW, 1963, 130 (05) :1677-+

[4] MACROSCOPIC QUANTUM TUNNELING OF THE MAGNETIC-MOMENT (INVITED) [J].

CHUDNOVSKY, EM .

JOURNAL OF APPLIED PHYSICS, 1993, 73 (10) :6697-6702

[5] QUANTUM TUNNELING OF MAGNETIZATION IN SMALL FERROMAGNETIC PARTICLES [J].

CHUDNOVSKY, EM ;

GUNTHER, L .

PHYSICAL REVIEW LETTERS, 1988, 60 (08) :661-664

[6]

Gardiner C.W., 1985, Handbook of stochastic methods, V3

[7]

Landau L. D., 1935, Phys. Z. Sowietunion, V8, P153, DOI DOI 10.1016/B978-0-08-036364-6.50008-9

[8]

RAIKHER YL, 1974, ZH EKSP TEOR FIZ+, V67, P1060

[9]

Sadykov EK, 1996, FIZ TVERD TELA+, V38, P2104

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