Effect of the silicon content on the magnetic susceptibility disaccommodation in silicon-iron ribbons

The magnetic permeability disaccommodation for the microcrystalline Fe-xSi (x=3, 5, 6.5 and 7.2 wt%) ribbons in the temperature range 220-410 K has been investigated. From those studies it was found that the relaxation spectrum in these alloys might be decomposed into five elementary processes. The relaxation process occurring at about 260 K is considered as the Snoek relaxation. However, processes occurring at higher temperatures seem to be connected with jumping of C atoms in the neighbourhood of Fe atoms surrounded by 1-4 silicon atoms