Magnetocaloric and Elastocaloric Effects in All‐d‐Metal Ni 37 Co 9 Fe 4 Mn 35 Ti 15 Magnetic Shape Memory Alloy

The magnetocaloric effect and the elastocaloric effect in a polycrystalline all‐d‐metal Ni 37 Co 9 Fe 4 Mn 35 Ti 15 magnetic shape memory alloy are investigated. The alloy undergoes a transition from ferromagnetic austenite to weak‐magnetic martensite near room temperature. It exhibits a maximum magnetic entropy change of 8.4 J Kg −1 K −1 under the magnetic field of 3 T. Moreover, a maximum temperature change of 6.3 K associated martensite transition is obtained at room temperature by loading the uniaxial stress of 400 MPa. These results suggest that the alloy is the promising candidate for new solid‐state refrigeration materials.