Spin-glass phase in the intermetallic Cu-Al-Mn compound

We have investigated the spin-glass phase of Cu-Al-Mn alloys with less than 10 at% Mn. The experimental data have been compared to the results obtaine d from a simulation of a diluted Ising spin-glass at T = 0 K. The model, in agreement with experiments, exhibits a disorder induced phase transition f rom a spin-glass phase with a smooth hysteresis cycle to a ferromagnetic ph ase with a much sharper cycle. (C) 1999 Elsevier Science B.V. All rights re served.