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.
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页码：1571 / 1573
页数：3
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