Phenomenological Modeling of Thermomagnetic Properties and Magnetocaloric Effect of (Mn $$_{0.6}$$ 0.6 Fe $$_{0.4}$$ 0.4 )NiSi $$_{1-x}$$ 1 - x Al $$_{x}$$ x ( $$x = 0.07$$ x = 0.07 and 0.08) Alloys

The magnetocaloric effect (MCE) of (Mn $$_{0.6}$$ Fe $$_{0.4}$$ )NiSi $$_{1-x}$$ Al $$_{x}$$ ( $$x = 0.07$$ and 0.08) alloys has been investigated. A phenomenological model has been adopted for simulation of magnetization variation with temperature to investigate magnetocaloric properties such as magnetic entropy change, heat capacity change and relative cooling power. The results indicate the potential of this series of alloys to achieve the MCE at temperatures near Curie temperature ( $$T_{C}$$ ). These alloys present as prospective candidates for cooling system in a wide temperature interval in the vicinity of room temperature. The maximum change in entropy near $$T_{C}$$ obtained by phenomenological model has been compared with the Arrott plot method. The results confirm that the phenomenological model is undoubtedly beneficial for the prediction of the magnetocaloric effect of magnetic materials.