Electrical resistivity studies on antiferromagnetic Cu3Pt-Mn spin glass

Abstract

Results of electrical resistivity ρ(T) measurements on (Cu3Pt)100−xMnx alloys with 0.5, 1, 1.85, and 3 at. % Mn in the temperature range of 1.8–300 K are presented. For 0.5 and 1.0 at. % Mn alloys, ρ(T) shows a maximum at low temperature followed by a minimum at a higher temperature. For 1.85 and 3 at. % Mn alloys, both the minimum and maximum in resistivity are washed out. The observed behavior seems to result from the weak indirect Ruderman–Kittel–Kasuya–Yosida interaction responsible for spin glass behavior in these alloys.