We report on measurements on the susceptibility of films of dilute Ag: Mn alloys as a function of applied magnetic field in the temperature range 1.2-60 K. The spin glass temperature $T_G$ was found to have a concentration dependence $T_G\propto C^{0.69}$ for the concentration range $C=0.61-7.00\mathrm{}$ at.% Mn, in good agreement with measurements made in bulk samples. It was also found that $T_G$ shifts to lower temperatures with increasing magnetic field, in qualitative agreement with theory.

• Received 20 October 1977

DOI:https://doi.org/10.1103/PhysRevB.18.3559