Magnetocaloric effect of Fe25Co25Ni25Mo5P10B10 high-entropy bulk metallic glass

In this work, Fe25Co25Ni25Mo5P10B10 high-entropy bulk metallic glass (HE-BMG) with a maximum diameter of 1.2 mm is prepared by combining fluxing treatment and J-quenching technique. The magnetocaloric effect and the high-entropy effect on the magnetocaloric properties of the present Fe25Co25Ni25Mo5P10B10 HE-BMG have been investigated. The Curie temperature of the presentFe(25)Co(25)Ni(25)Mo(5)P(10)B(10) HE-BMG is 560K, the peak value of the magnetic entropy change and the refrigerant capacity are 0.80 J kg(-1) K-1 and 135.4 J kg(-1) under the applied field of 1.5 T, 1.88 J kg(-1) K-1 and 310.2 J kg(-1) under the applied field of 5 T, respectively. Compared with other transition metal-based BMGs, the present Fe25Co25Ni25Mo5P10B10 HE-BMG does not exhibit a relatively larger magnetic entropy change but a much wider full width at half maximum temperature of the magnetic entropy change curve, thus a larger refrigerant capacity.