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Crystalline, partial and complete amorphous Nd_8Fe_(86)B_6 ribbons were prepared by melt spinning with different wheel speeds from 7 to 43 m·s~(-1). All the ribbons exhibited anisotropy in magnetization, which unusually increased when the ribbons changed from crystalline to amorphous states and slightly decreased when the quenching speeds were higher than 38 m·s~(-1). The experiments reveal that the anisotropy of amorphous ribbons is inherited after crystallization. It is understood that the anisotropy in magnetization of amorphous Nd_8Fe_(86)B_6 ribbons is responsible for the preferred orientation of spontaneous magnetization vectors of Nd-Fe-B clusters.
Crystalline, partial and complete amorphous Nd_8Fe_ (86) B_6 ribbons were prepared by melt spinning with different wheel speeds from 7 to 43 m · s -1. All the ribbons represented anisotropy in magnetization, which unusually increased when the ribbons changed from crystalline to amorphous states and slightly decreased when the quenching speeds were higher than 38 m · s -1. The experiments reveal that the anisotropy of amorphous ribbons is inherited after crystallization. It is understood that the anisotropy in magnetization of amorphous Nd_8Fe_ ( 86) B_6 ribbons is responsible for the preferred orientation of spontaneous magnetization vectors of Nd-Fe-B clusters.