NEW AMORPHOUS PHASE-FORMATION DURING AMORPHOUS STATE DECAY IN SOFT-MAGNETIC AMORPHOUS ALLOY

Decay of amorphous alloys of metal-metalloid type from the initial sta te up to surface crystallization under thermal action has been studied for three different alloys based on Fe-Ni, Fe-Co and Fe-Ni-Co. Temper ature dependences of their mechanical, magnetic, magneto-optical and h eat properties have been investigated. Embrittlement is established as two stage process for all alloys under consideration. Nature of micro scopic process determining the changes of the amorphous alloys macrosc opic properties has been established from magnetic, magneto-optical an d heat measurements. Experimental data obtained by above mentioned met hods let us to argue the formation of new amorphous phase clusters in the embrittled layers.