**Abstract**

In this paper, we have exploited the mean field theory combined with the Bean-Rodbell model to justify the magnetocaloric effect (MCE) in Nd0.67Ba0.33Mn0.98Fe0.02O3 sample. The simulation of some magnetic properties has been investigated. Modeling magnetization curves have been successfully achieved using this model. The second-order ferromagnetic-paramagnetic (FM-PM) phase transition of our system has been verified through the value of the parameter which controls the transition nature in the Bean-Rodbell model. Theoretical and experimental expressions, which have rated the magnetic entropy change (ΔSM) under various magnetic fields, have been derived. Theoretical (ΔSM) curves have been compared to the experimental ones.

**Keywords:** mean field theory, Bean-Rodbell, magnetocaloric effect, magnetization, magnetic entropy change
