Abstract. In this study, the magnetic, magnetocaloric, and hysteresis properties of the anti-perovskite compound ZnFe₃C were investigated using a mean-field approximation. The results demonstrate that the magnetization gradually decreases with increasing temperature. Conversely, the application of an external magnetic field enhances the alignment of magnetic moments, leading to an increase in the critical temperature ($T_c$). The magnetic entropy change ($−\Delta S_m$) exhibits a distinct peak at $T_c$, while the relative cooling power (RCP) shows a linear increase. Additionally, hysteresis analysis reveals that both coercivity and remanence progressively diminish as the temperature rises, with the hysteresis loop disappearing above $T_c$, indicating a transition to the paramagnetic phase. These findings highlight the potential of ZnFe₃C as a promising material for sustainable, high-performance magnetic refrigeration applications.

Key words: Anti-perovskite, ZnFe3C, Mean-field approximation, Magnetocaloric effect, Hysteresis behavior.