Temperature dependence of the electrical resistivity of amorphous Co80-xErxB20 alloys

Abstract The temperature dependence of the electrical resistivity of amorphous Co 80− x Er x B 20 alloys with x =0, 3.9, 7.5 and 8.6 prepared by melt spinning in pure argon atmosphere was studied. All amorphous alloys investigated here are found to exhibit a resistivity minimum at low temperature. The electrical resistivity exhibits logarithmic temperature dependence below the temperature of resistivity minimum T min . In addition, the resistivity shows quadratic temperature behavior in the interval T min T α shows a change in structural short range occurring in the composition range 8–9 at%.