Anisotropy properties of magnetic colloidal materials

被引：14

作者：

Qi, YB ^{[1
]}

Zhang, LY ^{[1
]}

Wen, WJ ^{[1
]}

机构：

[1] Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R China

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2003年 / 36卷 / 01期

关键词：

D O I：

10.1088/0022-3727/36/1/103

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Magnetic anisotropy of particulate magnetic materials is investigated with respect to the particle shape and compacting geometry. Uniform sized micro-rods and microspheres, coated with nickel, were used. Our results reveal that uniformly aligned rods show the largest magnetic anisotropy, while the field-oriented suspension of coated micro-rods shows somewhat weaker magnetic anisotropy, which is in excellent quantitative agreement with the theoretical calculation. The magnetic anisotropy drops significantly when the micro-rods were replaced by microspheres, even when they were aligned in chain-like formations.

引用

页码：L10 / L14

页数：5

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