Abstract
Magnetocaloric properties of LaFe10.7Co0.8Si1.5 with the cubic NaZn13-type structure were investigated around their Curie temperature TC. By the help of the phenomenological model, the magnetization curves for LaFe10.7Co0.8Si1.5 at several magnetic fields were simulated. The magnetic entropy change and specific heat are obtained. The values of maximum magnetic entropy change, full-width at half-maximum, and relative cooling power, at several magnetic field variation, were calculated. It is shown that for LaFe10.7Co0.8Si1.5 the magnetic entropy change follows an asymmetrical broadening of ΔSM peak with increasing field. The maximum magnetic entropy change of this compound is 7.10 JK−1 kg−1 and relative cooling power is 201.37 J/K under a magnetic field of 2 T. The magnetocaloric effect of this material is large and tunable, suggesting a possible technical application of the material at moderate magnetic fields near room temperature.
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