COERCIVITY AND MICROSTRUCTURE OF MELT-SPUN SM(FE11TI)

被引：25
|
作者：
SUN, H [1 ]
OTANI, Y [1 ]
COEY, JMD [1 ]
MEEKISON, CD [1 ]
JAKUBOVICS, JP [1 ]
机构：
[1] UNIV OXFORD,DEPT MET & SCI MAT,OXFORD,ENGLAND
来源：
JOURNAL OF APPLIED PHYSICS | 1990年 / 67卷 / 09期
关键词：
D O I：
10.1063/1.344845
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Amorphous Sm(Fe11Ti) ribbons were prepared by melt spinning. After heat treatment, very fine grains (≊50 nm) of the ThMn 12-structure phase were obtained with no signs of a separate intergranular phase. Each grain appears to be a single domain. The maximum room-temperature coercivity is 0.56 T, rising to 1.20 T at 11 K. A model is proposed for the coercivity which is based on an analogy with the random anisotropy model of amorphous magnetism. It gives the correct magnitude of the coercivity, and suggests it should vary as the reciprocal of the crystallite size.
引用
收藏
页码：4659 / 4661
页数：3
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