Magnetocaloric effect in the La_0.67Ca_0.33Mn_0.9Fe_0.1O₃La_0.67Ca_0.33Mn_0.9Fe_0.1O₃ perovskite over a broad temperature range

We report the magnetocaloric effect in the La_0.67Ca_0.33Mn_0.9Fe_0.1O₃La_0.67Ca_0.33Mn_0.9Fe_0.1O₃ perovskite. A peak in the magnetic entropy change [ΔS_M(H)] versus T curve, centered around 113 K, has been observed. −ΔS_M(H) increases with an increasing applied magnetic field. The maximum value of −ΔS_M(H) for ΔH = 3 T field has been found to be 1.18 J kg⁻¹ K⁻¹ at 113 K with a relative cooling power of ∼87 J kg⁻¹ and a quite broad operative temperature range 65–160 K. The hysteresis loss has been found to be very small. A large magnetocaloric effect with a relatively low material cost makes the studied perovskite attractive for magnetic refrigeration