Magnetic moment of CoCu solid solutions with 40 to 85 Cu

Metastable CoCu solid solutions in the concentration range between 12 and 95 Cu were obtained by simultaneous evaporation of Co and Cu on a cold substrate. The spin moment of the as-deposited alloys is equal to that of FeNi, CoNi, NiCu solid solutions with the same average number of electrons per atom. During annealing at 700°C for a suitable time the spin moment increases to the value calculated for the two-phase equilibrium state of the alloys. For an alloy with 65 Cu the Curie temperature is 580°K. All alloys have fcc structure before and after annealing. © 1962 The American Institute of Physics.