MAGNETIC-PROPERTIES AND MOSSBAUER STUDIES OF FE86ZR7B6CU1 ALLOY

The microstructure, magnetic susceptibility and its disaccommodation f or the amorphous and partially crystallized Fe86Zr7B6Cu1 ribbons are i nvestigated. Due to the stress relief, the decrease of the Curie tempe rature after the annealing of the sample at 573 K is observed. Moreove r, this treatment leads to the decrease of the average hyperfine field . The sample containing 7 % of alpha-Fe phase exhibits a superparamagn etic behaviour. The disaccommodation of the magnetic susceptibility in partially crystallized ribbons is connected with the relaxation proce sses occurring in the amorphous matrix.