Abstract
Abstract 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 present Fe25Co25Ni25Mo5P10B10 HE-BMG is 560 K, 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.
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