Optimum regime of heat treatment of soft magnetic amorphous materials

Abstract

The influence of Fe 72.5 Cu 1 Nb 2 Mo 1.5 Si 14 B 9 nanocrystalline alloy annealing temperature on the structure and magnetic properties has been investigated. The heat treatment temperature of nanocrystalline soft magnetic alloy Fe 72.5Cu 1Nb 2Mo 1.5Si 14B 9, which allows reaching the maximum value of the initial magnetic permeability, was found to be 15-20° higher than that ensuring the minimum coercive force. The relation between the numerical values of the coercive force, the initial magnetic permeability and the magnetic hysteresis loop rectangularity factor allows optimizing the mode of nanocrystalline alloy heat treatment. © 2006 IEEE.