Temperature dependence of soft magnetic properties in amorphous Co69Fe4.5X1.5Si10B15 (X=Cr, Mn, Ni) alloys

Abstract The temperature dependence of soft magnetic properties in amorphous Co 69 Fe 4.5 X 1.5 Si 10 B 15 (X=Cr, Mn, Ni) alloys was investigated by means of the changes in incremental permeability ratio (PR) as a function of temperature from 10 to 300 K. The shape of the PR curves in Co 69 Fe 4.5 Cr 1.5 Si 10 B 15 alloy does not change substantially with temperature except that the PR values become larger. The PR curve in Co 69 Fe 4.5 Mn 1.5 Si 10 B 15 alloy becomes broader and larger as temperature increases in contrast to the Co 69 Fe 4.5 Ni 1.5 Si 10 B 15 alloy in which the PR curve becomes narrower due to the decrease of anisotropy as the temperature increases.