Amorphous can be obtained at certain composition range using ball milling . the size of the amorphous particles decreases with the lengthening of milling time , and reaches several nanometers . experiment also shows that the mixture powder is well ferromagnetic 实验发现,在一定成分范围内通过球磨可以获得非晶,非晶粉末颗粒大小随球磨时间的延长而减小,最终达到几个纳米;同时发现,该混合粉末具有良好的铁磁性。