Amorphous magnetic RE-Fe-Al alloys

被引：6

作者：

Hui Zi Kong ^{[1
]}

Ding, J. ^{[1
]}

Wang, L. ^{[1
]}

Li, Y. ^{[1
]}

机构：

[1] Materials Science Department, National University of Singapore, Singapore 119260, Singapore

来源：

IEEE Transactions on Magnetics | 2001年 / 37卷 / 4 I期

关键词：

Coercive force - Ferromagnetism - Magnetic properties - Melt spinning - Neodymium alloys - Superparamagnetism;

D O I：

10.1109/20.951215

中图分类号：

学科分类号：

摘要：

Detail studies of the effects of rare-earth substitution on the magnetic properties of bulk amorphous hard magnetic Nd60Fe30Al10 alloys were carried out. Amorphous ribbons of alloys RE60Fe30Al10 (with RE = Nd, Sm, Gd and Dy) were prepared by melt-spinning at 30 m/s. As temperature increases, instead of just a simple transition from ferromagnetic state to paramagnetic state, these ribbons undergo a superparamagnetic stage that ranges over about 100 K. Ribbons of alloys RE60Fe30Al10 with RE = Nd, Sm and Dy exhibit high values of coercivity (in MA/m) range at 4 K, while coercivity of ribbons of alloys with RE = Y and Gd remain low below 100 kA/m).

引用

页码：2500 / 2503