MAGNETIC REVERSAL IN SM2FE17NY PERMANENT-MAGNETS

被引：13

作者：

SKOMSKI, R ^{[1
]}

MULLER, KH ^{[1
]}

WENDHAUSEN, PAP ^{[1
]}

COEY, JMD ^{[1
]}

机构：

[1] IFW DRESDEN, O-8027 DRESDEN, GERMANY

来源：

JOURNAL OF APPLIED PHYSICS | 1993年 / 73卷 / 10期

关键词：

D O I：

10.1063/1.353465

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Coercivity and nucleation fields for three-dimensional inhomogenities are calculated and discussed. For soft spherical inclusions in a hard magnetic matrix a (delta/R)2 dependence of the nucleation field on inclusion radius R and domain wall width delta has been obtained. To calculate propagation fields for spherical inhomogenities, a nonlinear model has been used. The corresponding coercive field can be much higher than the nucleation field, particularly if the magnitude of the anisotropy changes very steeply. Soft inclusions with sharp interfaces are ineffective at producing complete magnetic reversal. For partly nitrided particles coercivity and nucleation field are predicted to be identical, which is confirmed by experiments on high-performance Sm2Fe17N3-delta magnets.

引用

页码：6047 / 6049

页数：3

共 16 条

[1] IMPROVED MAGNETIC-PROPERTIES BY TREATMENT OF IRON-BASED RARE-EARTH INTERMETALLIC COMPOUNDS IN AMMONIA [J].