Effect of Inhibitors on the Crystallization and Magnetic Properties of Nanocrystalline Alloys

Abstract

In the paper, the crystallization process of nanocrystaline alloys Fe 73.5 Cu 1 M 3 Si 13.5 B 9 where M = Nb, W, Mo, V, Cr and the physical origin of different efficiency of impact that inhibitors exert on the structure and magnetic properties has been investigated. It is shown that the structure formed at the peak temperature of the crystallization process is close to the optimal one and ensures high values of magnetic permeability. The efficiency is directly related to the solubility of inhibitory elements in αFe, which in turn affects the diffusivity of atoms. Upon slow migration of grain boundaries, the inhibitory atoms with lower diffusivity, being concentrated near the front of moving boundary, provide stronger drag. © Published under licence by IOP Publishing Ltd.