The investigations of phase transitions in Ni–Mn–Ga under external magnetic field

Abstract On the basis of statistical model the phase transitions in Ni–Mn–Ga alloys under external magnetic field have been studied. A phase diagram in H – T coordinates was obtained. A shift of martensitic–austenitic and austenitic–martensitic phase transition temperatures under external magnetic field was defined. The field dependencies of strain were investigated too. Theoretical results agree well with experimental data.