The changes of the structural and magnetic properties of Co20Cu80 duri
ng mechanical alloying were studied as well as the structure and magne
tic behaviour of mechanically alloyed Co34Cu76. The magnetic behaviour
of the final products was compared to that of similar alloys prepared
by different techniques. Clear evidence for superparamagnetism was fo
und in the mechanically alloyed compounds. (C) 1998 Elsevier Science B
.V. All rights reserved.