Large magnetic entropy change above 300 K in (La0.56Ce0.14)Sr0.3MnO3 perovskite - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Journal of Alloys and Compounds Année : 2010

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

Sami Kallel
  • Fonction : Auteur
Nabil Kallel
  • Fonction : Auteur
Ahmed Hagaza
  • Fonction : Auteur
Mohamed Oumezzine
  • Fonction : Auteur

Résumé

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.

Domaines

Matériaux

Dates et versions

hal-00829600 , version 1 (03-06-2013)

Identifiants

Citer

Sami Kallel, Nabil Kallel, Ahmed Hagaza, Octavio Peña, Mohamed Oumezzine. Large magnetic entropy change above 300 K in (La0.56Ce0.14)Sr0.3MnO3 perovskite. Journal of Alloys and Compounds, 2010, 492 (1-2), pp.241-244. ⟨10.1016/j.jallcom.2009.11.107⟩. ⟨hal-00829600⟩
85 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More