HIGH-FIELD MAGNETIC STUDY OF SMALL FE PARTICLES DISPERSED IN AN ALUMINA MATRIX

被引：27

作者：

DJEGAMARIADASSOU, C

DORMANN, JL

NOGUES, M

VILLERS, G

SAYOURI, S

机构：

[1] Laboratoire de Magnétisme, 92195 Meudon Cedex, C.N.R.S.

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1990年 / 26卷 / 05期

关键词：

D O I：

10.1109/20.104537

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：

High field magnetic study has been performed on small Fe particles dispersed in an alumina matrix. The determination of the magnetic volume in high magnetic field is improved relatively to that in low field. The absolute value of the magnetic moment and its thermal variation are obtained. A reduction of its value is observed depending on the particle size. This behaviour is caused mainly by particle surface magnetic disorders, the relative fraction of the perturbed atomic layers increases when the particle size decreases. © 1990 IEEE

引用

页码：1819 / 1821

页数：3

共 5 条

[1] SMALL PARTICLE SUSCEPTIBILITY - VALIDITY OF THE VOLUME DETERMINATION AND MEANING OF THE SUPERPARAMAGNETIC CONSTANT THETA-SP [J].