The magnetocaloric effect is a dynamic phenomenon associated with a temperature change of a magnetic material when it is subjected to a magnetic-field change. The effect can be assessed through the adiabatic temperature change (∆T ad ) or the isothermal magnetic-entropy change (∆Sm). This work reviews some typical methods that are usually used to calculate ∆Sm for perovskite-type manganites. These methods was thermodynamic relations and different theoretical models to analyze magnetization

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... erms, M (H) data, recorded at temperatures around the ferromagnetic-paramagnetic phase transition (TC ), Together with showing the methods for calculating of ∆Sm, we also take into account the figures of merit of a MC material.