Large magnetic entropy change above 300 K in (La0.56Ce0.14)Sr0.3MnO3 Perovskite

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 composi...

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Bibliographic Details
Published in:Journal of alloys and compounds 2010-03, Vol.492 (1-2), p.241-244
Main Authors: KALLEL, Sami, KALLEL, Nabil, HAGAZA, Ahmed, PENA, Octavio, OUMEZZINE, Mohamed
Format: Article
Language:English
Subjects:
Chemical Sciences
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic properties and materials
Magnetically ordered materials: other intrinsic properties
Magnetocaloric effect, magnetic cooling
Magnetotransport phenomena, materials for magnetotransport
Manganites
Material chemistry
Physics
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Summary: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 View the MathML sourceΔSMmax 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.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2009.11.107