Abstract
The influence of Cu substitution for Mn on martensitic transformation, superelasticity and associated elastocaloric effect in Ni44Mn45−xSn11Cux (x=0–4) magnetic shape memory alloys has been investigated. The transformation temperatures were tuned around room temperature by increasing the Cu content. Ni44Mn41Sn11Cu4 exhibits a giant adiabatic cooling of −8K at a small transformation strain of 1.3%, indicating it as a promising candidate material for elastocaloric refrigeration.
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