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Remplacement du champ magnétique par la pression : l'effet barocalorique pour le froid magnétique.

Replacing the magnetic field by pressure: the barocaloric effect for magnetic refrigeration.

Auteurs : STRÄSSLE T., FURRER A.

Résumé

Commonly, magnetic refrigeration is based on the change of entropy invoked by the application of an external magnetic field on a paramagnetic or magnetic compound. While being a thermodynamic variable, an external magnetic field does not necessarily represent the only variable to affect the entropy. In fact, conventional cooling techniques are based on the change of the non-magnetic part of the entropy by external pressure. Correspondingly, a novel cooling effect results, when external pressure is applied in order to change the magnetic part of the entropy. In analogy to the magnetocaloric effect, this novel effect has been called the barocaloric effect. In this paper, the authors review their recent work on this subject with special emphasis on two compounds, namely Ce-Sb and Eu-Ni-Si-Ge.

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Pages : 2005-4

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Détails

  • Titre original : Replacing the magnetic field by pressure: the barocaloric effect for magnetic refrigeration.
  • Identifiant de la fiche : 2006-1231
  • Langues : Anglais
  • Source : 1st International Conference on Magnetic Refrigeration at Room Temperature
  • Date d'édition : 27/09/2005

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