Large inverse magnetocaloric effect in Ni45Co5Mn37.5In12.5 single crystal above 300 K

Bourgault, Daniel; Tillier, Jérémy; Courtois, Pierre; Maillard, Denis; Chaud, Xavier
March 2010
Applied Physics Letters;3/29/2010, Vol. 96 Issue 13, p132501
Academic Journal
A large inverse magnetocaloric effect has been observed in a Ni45Co5Mn37.5In12.5 single crystal at room temperature. Magnetothermal measurements performed at different magnetic fields reveal a nonmagnetic to ferromagnetic transition correlated with the austenite-martensite phase transformation. The Heusler single crystal shows a large entropy change of 30 J/Kg K at an applied magnetic field of 7 T during the first-order magnetostructural transition at 355 K. It leads to a net refrigerant capacity of 267 J/Kg at 7 T, which is very encouraging for magnetic refrigeration applications.


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