The multi peaks of magnetocaloric effect in Ni₄₈Mn_39.5Sn_9.5Al₃ ribbon

The magnetocaloric effect (MCE) of Ni₄₈Mn_39.5Sn_9.5Al₃ ribbon is simulated using a phenomenological model with possible uses in magnetic refrigeration (MR). In this work, both conventional and inverse MCEs associated with magnetic (ferromagnet-antiferromagnet) and structural (austenite–martensite) phase transitions are theoretically investigated. The results show that three associated peaks of the inverse and conventional MCEs are observed. It is recommended that magnets with triple peak MCE behaviour, such as Ni₄₈Mn_39.5Sn_9.5Al₃ ribbons, may offer an intriguing MR with a larger temperature-range than conventional refrigerant compounds, particularly Ni₄₈Mn_39.5Sn_9.5Al₃ ribbons, which are cheap to use in MR. Furthermore, the MCE values of Ni₄₈Mn_39.5Sn_9.5Al₃ ribbons are significantly higher than those of some magnetocaloric materials from previous studies. Consequently, Ni₄₈Mn_39.5Sn_9.5Al₃ ribbons are appropriate magnetocaloric magnets for wide temperature range, covering cryogenic and room-temperatures.