文摘
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 − 8 K at a small transformation strain of 1.3%, indicating it as a promising candidate material for elastocaloric refrigeration.