Abstract
Abstract Magnetic field dependence of the magnetic entropy change (ΔSM) is the key for magnetic refrigeration. A large magnetic entropy change (ΔSM) associated with the ferromagnetic-paramagnetic transition in Ce-doped La0.7Sr0.3MnO3 material has been observed. It is shown for (La0.56Ce0.14)Sr0.3MnO3 composition at the Curie temperature of 357 K, that the maxima of the magnetic entropy changes Δ S M max upon variation of the applied magnetic field at 1 and 5 T are about 1.55 and 4.78 J kg−1 K−1, respectively. Due to the large (ΔSM) and high Curie temperature, the (La0.56Ce0.14)Sr0.3MnO3 perovskite is suggested to be used as potential magnetic refrigerants for magnetic refrigeration technology above room temperature.
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