Orientation dependence of the shape memory effect and superelasticity in Co49Ni21Ga30 ferromagnetic single crystals

摘要

Ferromagnetic alloys Ni2 MnGa undergo thermoelastic martensitic transformations in the process of cooling/heating, upon loading, and in a magnetic field. This class of materials is characterized by large reversible strains ε~4–10%, which are induced by the magnetic field and can be used to transform the magnetic energy into mechanical energy [1–3].