Stress-induced twin rearrangement resulting in change of magnetization in a Ni–Mn–Ga ferromagnetic martensite

Abstract

Magnetoplasticity is the large magnetic-field-induced deformation of ferromagnetic martensite. This effect is caused by a twin rearrangement. A strain-induced change of magnetization is the inverse effect. This effect is studied experimentally on a Ni–Mn–Ga single crystal. The deformation-induced change of magnetization is linear to the compressive strain and shows only small hysteresis in a loading–unloading cycle performed in an orthogonal magnetic field.