Structure and coercivity of nanocrystalline Fe-Si-B-Nb-Cu alloys

Abstract

Crystallization behaviour and magnetic properties of melt-spun Fe-Si-B-Nb-Cu alloys have been investigated. It is found that the primary phase changes from α-Fe(Si) to Fe3Si (DO3) on increasing the Si content. The coercivity of the alloys containing the Fe3Si phase is significantly lower as compared to the alloy containing α-Fe(Si) phase. A heat treatment temperature-time-coercivity map has been obtained for optimization of the coercivity. © Indian Academy of Sciences.