Effect of continuous ultrashort electropulsing on soft magnetic propertiesof amorphous Fe78Si9B13 alloys

Amorphous Fe78Si9B13 alloys were treated by continuous ultrashort electropu lsing, the comprehensive magnetic properties were measured after that. The experimental results showed that better soft magnetic properties could be o btained when the precipitate amount of alpha-Fe(Si) was about 3 % and the g rain size of alpha-Fe(Si) was about 33 nm, for example, raising the maximum permeability mu(M), and obviously reducing the coercivity H-c. The mechani sm of impravement of the soft magnetic properties of the amorphous alloy by continuous ultrashort electropulsing was discussed making use of the rando m anisotropy model.