Search

Highlights • We calculate thermomagnetic properties and magnetocaloric effect using the MFT. • The bulk and shear modului, γ e and ϴ D were calculated from the DOS(EF). • Arrott plots was calculated for different temperatures and fields. Abstract We report on a theoretical study of thermomagnetic and magnetocaloric properties of TmFe 2. The magnetization, total heat capacity, total entropy and magnetocaloric effect, namely isothermal entropy change ΔS m and adiabatic temperature change ΔT ad , are calculated for magnetic fields up to 8 T and for temperatures up to 700 K. Mean- field analysis, within the two sublattice model, showed that TmFe 2 is a ferrimagnetic compound exhibiting a compensation point at T comp = 200 K and a Curie temperature at T C = 550 K. Direct and inverse MCEs are shown to take place in this ferrimagnetic compound. We have calculated direct MCE with maximum |ΔS m | of 0.50 J/ mole K at T c , and an inverse MCE with maximum |ΔS m | of 0.57 J/mole. K, for an applied field change of 8 T. |ΔT ad | has its maximum value of 5.57 K in an applied field change of 8 T. i.e. a temperature drop of 0.70 K/T has been achieved. The calculated Arrott plots and the relation between |ΔS m | and M2 demonstrated that the magnetic phase transition in this compound is of the second order. The mean-field model proves its suitability for calculating the properties of the compound under study. [ABSTRACT FROM AUTHOR]