COERCIVE FIELD IN SM2FE17NX HYDROGEN DECREPITATED MAGNETS

被引:10
作者
HU, JF [1 ]
KOU, XC [1 ]
KRONMULLER, H [1 ]
ZHOU, SZ [1 ]
机构
[1] UNIV SCI & TECHNOL BEIJING,DEPT MAT SCI & ENGN,BEIJING 100083,PEOPLES R CHINA
来源
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH | 1992年 / 134卷 / 02期
关键词
D O I
10.1002/pssa.2211340219
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The coercivity mechaniSM of Sm2Fe17Nx hydrogen decrepitated magnets is analysed on the basis of micromagnetism. The discrepancy between the experimentally realized coercivity and the ideal nucleation field as predicted by Brown is also found in Sm2Fe17Nx magnets. This discrepancy is due to the effect of the microstructure. Our analysis strongly indicates that the coercivity in Sm2Fe17Nx hydrogen decrepitated magnets is controlled by the nucleation mechanism. The anisotropy constants K1, K2, and the saturation polarization J(s) of Sm2Fe17Nx in the temperature range from 200 to 620 K are determined from the analysis of the approach to ferromagnetic saturation.
引用
收藏
页码:499 / 507
页数:9
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