Abstract
Magnetocaloric materials have shown huge potential for magnetic refrigeration but fail meeting the application standard because of the low magnetic entropy change ΔSM. In this work, high-energy electron irradiation is used to enlarge the magnetization difference ΔM in the inverse martensitic transition for Ni–Co–Mn–In alloys, which is mainly attributed to the variations of the short-range atomic arrangement and electronic structure. As a result, the ΔSM can reach up to 62.17 J/(kgK) only with a small magnetic field of 3 T. Even compared with the ΔSM of other works measured under 5 T magnetic field, this value is much superior and can be further improved up to 136.16 J/(kgK) with increasing the magnetic field to 7 T. Such high ΔSM could improve the attractiveness of the material for the actual application.
Published Version
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