MAGNETIC-SUSCEPTIBILITY DISACCOMMODATION AND MOSSBAUER STUDIES OF HIGH SILICON-IRON ALLOY OBTAINED BY DIFFERENT METHODS

The microstructure and soft magnetic properties, i.e. the initial susc eptibility and its disaccommodation for the Fe-6.5 wt% Si samples in t he form of ribbons (obtained by rapid quenching) and sheets (prepared by a chemical vapour deposition method) were studied. The investigatio ns were performed for the samples annealed at 1373 K for 1 h and then cooled to room temperature in a furnace or in icy water. It was report ed that in the samples cooled in a furnace, B2 superstructure in 50% s ample volume is observed. However, the higher rate of cooling leads to the short-range ordering of silicon atoms. Simultaneously, better sof t magnetic properties, i.e. the lower stabilization held and disaccomm odation intensity, and higher initial permeability for the samples coo led in water were observed. (C) 1998 Elsevier Science B.V. All rights reserved.