Abstract
Magneto-Caloric properties were studied both in Ni–Co–Mn–In alloys and single crystals. A large inverse Magneto-Caloric Effect at room temperature was observed in a Ni45Co5Mn37.5In12.5 single crystal. A large magnetic entropy change is found in such NiCo–Mn–In single crystal (ΔSm=30J/KgK) at 355 K and under a magnetic field of 7 T during the first order magneto-structural transition. The net refrigerant capacity obtained higher than 270±25J/Kg for 7 T is very encouraging for magnetic refrigeration applications.
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