Large elastocaloric effect at small transformation strain in Ni45Mn44Sn11 metamagnetic shape memory alloys

摘要: The elastocaloric effect has been investigated by directly measuring temperature change in Ni45Mn44Sn11 metamagnetic shape memory alloys. The stress plateau for magnetostructural transition can be drastically re- duced due to the mechanical training effect. A large temperature change of 4 K was found during compressing the sample with a small transformation strain of 1.3% at 291.5 K. Our results indicate that Ni–Mn–Sn alloys can be a promising candidate for solid-state refrigerants in mechanical cooling application by low deformation level.