The Effect of Fe and Metalloid Contents on Magnetic Properties of Fe-Si-B-P Amorphous Alloys Containing Fe in the Range of 83-85 at%

A series of Fe–Si–B–P amorphous alloys with high Fe content in the range of 83-85 at.% were successfully prepared through a melt-spinning technique. The effects of Fe content and metalloid elements on thermal and magnetic properties of Fe–Si–B–P amorphous alloys were studied. The saturation magnetization (MSUBs/SUB) values of amorphous alloys tend to decrease with the increase of Fe content higher than 83 at%. For a given Fe content, the replacement of Si or B by P results in a decrease of the MSUBs/SUB value. When the P content more than 5 at.%, the MSUBs/SUB value of the ribbon rapidly decreases. In addition, the compositional dependence of the thermal and magnetic properties has been discussed.