Abstract
NiMn-based Heusler alloy-based solid-state refrigeration technology has received great attention in the field of magnetic refrigeration due to their low energy consumption, environmental friendliness, high magnetization difference (ΔM), low thermal hysteresis (ΔThys) across the magneto-structural transformation, and giant magnetocaloric properties at the low magnetic field. We report the promising rare-earth-free magnetic refrigerant material of Ni45Co5Mn37In12Si1 prepared by arc melting followed by heat-treatment with an inverse magnetocaloric effect and notable inverse ΔSM of 8.6 J kg−1 K−1 around 241 K. Moreover, the large refrigeration capacity (RC) of 462 J kg−1 with a wide operating temperature of ∼53.8 K is obtained for sample thus annealed for 10 h, which is relatively comparable with rare-earth-based high-performance Gd5Si2Ge2 materials.
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