Abstract
We investigate in detail the magnetic, magnetocaloric properties and phenomenological model of amorphous Fe40Ni38Mo4B18 alloy. The melt spinning method has been used to synthesize the amorphous alloy. With a Curie temperature of 610 K, the magnetic transition nature undergoes a second-order magnetic phase transition from ferromagnetic to paramagnetic states. The magnetic entropy change (-ΔSM) is determined using the thermodynamic Maxwell’s relation. Moreover, we report a theoretical investigation of the magnetocaloric effect using a phenomenological model. The best model parameters and their variation with temperature and the magnetic field were obtained. The theoretical predictions were found to be in line with the experimental results.
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