摘要
高频磁性材料的广泛应用促使人们致力于开发一种理想的软磁材料，它不仅在弱场下具有高的磁导率和低矫顽力，而且在较强磁场下仍然有较高的饱和磁通密度[1]。1988年Yoshizawa等人发现将含有Cu和Nb的FeSiB非晶合金条带退火后，在非晶基体上均匀分布着许多无规则取向的10～...
The local structures of the mechanically alloyed (MA) Fe77-xNixCu1Nb2P14B6 soft magnetic materials were investigated by X-ray absorption fine structure (XAFS) The results showthat during the ball milling, there are the same changes for the lotal structures of Fe and Niatoms in a MA Fe77-xNixCu1Nb2P14B6sample. Mechanical alloying can drive the Fe77-xNixCu1Nb2P14B6powder mixture to produce a amorphous alloy while the atomic composition of Fe element isbeyond 40%. In contrast, the MA Fe22Ni55Cu1Nb2P14B6 and Fe12Ni65Cu1Nb2P14B6 form alloys witha fcc-like structure, preserving a medium rang order around Ni and Fe atoms after 120 hball milling. We find that the bee structuralα-Fe disappears and fcc structural Fe is formedfor the MA Fe77-xNixCu1Nb2P14B6 alloy while Fe atomic composition is lower than 22%. It indicates that a soft magnetic Fe77-xNixCu1Nb2P14B6 nanometer polycrystal can be produced by MA.
