ESR OF ULTRAFINE MAGNETIC PARTICLES

被引：87

作者：

NAGATA, K

ISHIHARA, A

机构：

[1] Department of Physics, Faculty of Science, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152, Oh-okayama

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1992年 / 104卷

关键词：

D O I：

10.1016/0304-8853(92)91459-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ultrafine ferrimagnetic particles (Mn-Zn ferrite) dispersed in solid kerosene have been investigated by electron magnetic resonance. Below about 220 K where the particles are embedded in the frozen kerosene, the observed spectra show a broad line with a Gaussian lineshape, which broadens and shifts towards lower fields as the temperature is lowered. The shifts of the resonance fields are proportional to the second- and third-powers of the linewidths for the samples frozen in a finite applied field and a zero field, respectively. A phenomenological theory for the lineshift will be described.

引用

页码：1571 / 1573

页数：3

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