Nanocrystallization and magnetic properties of Fe85.4Zr6.8−M B6.8Cu1 (x=0 or 1; M=Nb, Nd or Mo) alloys

Abstract After annealing alloys below crystallization temperatures, the decrease of the average hyperfine field due to the invar effect is observed. At early stages of crystallization, the iron content in the amorphous matrix is the same as in the as-quenched state. The amorphous samples show broad disaccommodation spectra with activation energies from 0.6 to 0.9 eV. The highest initial magnetic susceptibility was obtained for the nanocrystalline Fe 85.4 Zr 5.8 Nb 1 B 6.8 Cu 1 alloy. However, the best thermal stability of the susceptibility is observed for the Fe 85.4 Zr 6.8 B 6.8 Cu 1 alloy.