Temperature and magnetic field induced strain in Ni₅₀Mn₃₄In₁₆alloy

Abstract

We report a study of temperature and magnetic field induced strain across the martensite (MST)–austenite (AST) transition in Ni50Mn34In16 alloy. Both the isothermal magnetic field variation and the variation of temperature at constant field can induce strain of greater than 0.1% in the MST–AST phase transition region. Furthermore, our results reveal the influence of the path traversed in field-temperature phase space on the strain generated in this Ni50Mn34In16 alloy. Depending on the thermomagnetic history of the sample the induced strain can be reversible or irreversible in nature.