Simulation of the magnetocaloric effect by means of theoretical models in Gd3Ni2 and Gd3CoNi systems

Abstract

AbstractIn this work, using a scaling data method based on the mean-field theory (MFT), magnetization isotherms M (H, T) and magnetic entropy change $$ - \Delta S_{M} (T) $$-ΔSM(T) curves have been simulated using MFT combined with the Bean–Rodbell model which verified the second-order phase transition for Gd3Ni2 and Gd3CoNi compounds. Under a low value of magnetic field H, M (T) and $$ - \Delta S_{M} (T) $$-ΔSM(T) curves have been successfully simulated and some magnetocaloric properties have been evaluated using the phenomenological model.