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Document IIF

Comportement complexe d'aimantation et l'effet magnétocalorique dans un faible champ magnétique au voisinage de transitions de phase magnétiques.

Complex behaviour of magnetization and magnetocaloric effect in low magnetic field in the vicinity of magnetic phase transitions.

Auteurs : ZVEREV V. I., TISHIN A. M.

Résumé

The new method of finding the precise value of temperature at which MCE reaches its maximum is proposed. It's based on the solving of variational maximum problem as regards integral equation for MCE. Also it was experimentally shown that the MCE maximum point shifts towards higher temperatures in low magnetic fields. So the general character of MCE maximum point behaviour is determined i.e. while the magnetic field increases the MCE maximum point shifts towards higher temperatures from the approximate point in the case of zeroth-magnetic field. According to this we offer to consider the MCE maximum point not as a constant but as function of magnetic field. Two complex temperature-field dependences of magnetization based on such an approach are received. The question of the explicit character of this function stays open and should be solved experimentally.

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Format PDF

Pages : 2009-3

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    20 €

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    Gratuit

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Détails

  • Titre original : Complex behaviour of magnetization and magnetocaloric effect in low magnetic field in the vicinity of magnetic phase transitions.
  • Identifiant de la fiche : 2009-1618
  • Langues : Anglais
  • Source : 3rd International Conference on Magnetic Refrigeration at Room Temperature
  • Date d'édition : 11/05/2009

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