MAGNETIC-PROPERTIES OF THE 3D-BASED METALLIC GLASSES AT DUCTILE-BRITTLE TRANSITION

The magnetic properties of some Co- and Fe-based amorphous metallic al loys at ductile-brittle transition after annealing are presented and d iscussed. It was found that the temperature dependences of magnetizati on of annealed samples qualitatively coincide with those of as-quenche d ones, but the Curie temperature values T-c are rising. Therewith, fr om the temperature dependences of magnetic susceptibility chi(T) withi n the paramagnetic region for the investigated ribbons it is followed that value of the mean effective moment per alloy atom mu is rising wi th annealing temperature T-c. Such behaviour of T-c and mu is connecte d with chemical short-range ordering changes and formation of the micr oinhomogeneities in subsurface layers with amorphous structure enriche d with transition metal atoms in comparison with as-quenched ribbons.