Blocking temperature, energy barrier, and reversal field variation of fine magnetic particles

被引：20

作者：

Huang, HL ^{[1
]}

Lu, JJ ^{[1
]}

机构：

[1] Natl Taiwan Univ, Dept Phys, Taipei 106, Taiwan

来源：

APPLIED PHYSICS LETTERS | 1999年 / 75卷 / 05期

关键词：

D O I：

10.1063/1.124490

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Blocking temperature, energy barrier, and reversal field variation of interacting fine magnetic particles display similar characteristics as a function of the bonding angle and interparticle distance in the context of the dipole interaction. The energy barrier and reversal field exhibit local maxima at the bonding angles beta=0 degrees and pi/2 and a global minimum at beta similar or equal to 60 degrees. Thus, the sample average of these quantities is found to reduce with decreasing interparticle distance, in agreement with the latest experimental data. For a system with easy-axis misorientation, magnetization reversal will traverse along the direction in which the misorientation angle and bonding angle have the same sign. (C) 1999 American Institute of Physics. [S0003-6951(99)03531-7].

引用

页码：710 / 712

页数：3

共 10 条

[1]

BINDER K, 1980, SPRINGER SERIES SOLI

[2] ENERGY BARRIERS FOR THERMAL REVERSAL OF INTERACTING SINGLE DOMAIN PARTICLES [J].