THE ACTIVATION VOLUMES OF REVERSAL IN ULTRA FINE PARTICLES

被引：10
作者：
DEWITTE, AM
OGRADY, K
机构：
[1] Magnetic Materials Research Group, School of Electronic Engineering Science, University College of North Wales, Bangor, Gwynedd
来源：
IEEE TRANSACTIONS ON MAGNETICS | 1990年 / 26卷 / 05期
关键词：
D O I：
10.1109/20.104534
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper we report measurements of the activation volume of reversal and the fluctuation field of a system of ultrafine cobalt particles. The measurements were made in a range of applied fields so as to enable a comparision to be made with theoretical models which are often applied to more complex materials eg. NdFeB magnets. The values obtained for the activation volume are in broad quantitative agreement with the particle size as determined by other methods providing the first unambiguous verification of the activation volume model of magnetisation reversal. © 1990 IEEE
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页码：1810 / 1812
页数：3
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