Influence of annealing on the magnetic entropy changes in Fe81.6Mo4Zr3.3Nb3.3B6.8Cu1 amorphous ribbons

Abstract We have prepared amorphous Fe 81.6 Mo 4 Zr 3.3 Nb 3.3 B 6.8 Cu 1 ribbon by melt-spinning. Differential thermal analysis (DTA) is used to determine the crystallization temperature of the as-quenched ribbon. As-quenched ribbons were annealed at 300 and 400 °C. After thermal treatment, an elevated magnetic entropy change (∣Δ S M ∣) is observed. The influence of annealing effects on the ∣Δ S M ∣ and the potential application of annealed amorphous ribbons as a working material for magnetic refrigerants have been discussed.