A STUDY OF THE INDUCED MAGNETIC-ANISOTROPY MECHANISM IN ACICULAR COBALT-FERRITE PARTICLES

被引：3

作者：

LUO, HL

WANG, GH

机构：

[1] Institute of Physics, Chinese Academy of Sciences, Beijing, 100080, Claverton Down

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 1994年 / 27卷 / 05期

关键词：

D O I：

10.1088/0022-3727/27/5/002

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The influence of Fe2+ ions on the coercivity and induced magnetic anisotropy of acicular cobalt-ferrite particles was studied. When the Co2+ content was constant, the coercivity and induced magnetic anisotropy linearly increased with increasing Fe2+ content of the acicular cobalt-ferrite particles. The activation energy E of these samples was measured and found to be about 0.4 eV. A model of Co2+ and Fe2+ pairs oriented along the magnetic field direction to induce a uniaxial magnetic anisotropy after magnetic annealing is proposed to explain the experimental results.

引用

页码：892 / 896

页数：5

共 9 条

[1]

BATE G, 1980, FERROMAGNETIC MATERI, V2, P453

[2] REVERSIBLE COERCIVITY VS TEMPERATURE LOSSES IN ACTIVATED COBALT ADSORBED IRON-OXIDES [J].