Magnetic properties of amorphous Co and Ni alloys

The magnetic properties of amorphous alloys of the type Mg1−xNix, Zr1−xNix, Hf1−xCox, and Nb1−xCox were studied in the temperature range 4.2–300 K. The saturation moments in these alloys and other Co-base amorphous alloys were analyzed in terms of a model proposed earlier, where account is taken of the size difference of the constituent metal atoms and the presence of compositional short-range ordering. It is shown that an additional moment reduction can be expected in amorphous alloys in which the 3d metal is combined with Ti, Nb, Ta, W, or Mo.