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Propriétés magnétocaloriques de Mn(2-x)Fe(x)P(0,51)Si(0,49).

Magnetocaloric properties of Mn(2-x)Fe(x)P(0.51)Si(0.49).

Auteurs : GENG Y. X., TEGUS O., BILIGE Q., et al.

Résumé

These compounds with x= 0.80, 0.85, 0.90, 0.95 and 1.0, were prepared by ball milling in vacuum and high-temperature solid-state reaction in an Ar atmosphere. Magnetocaloric properties of the compounds were investigated by means of magnetic measurements. The compounds undergo a ferromagnetic to paramagnetic first-order transition and the Curie temperature increases with increasing Fe contents. The maximal magnetic-entropy change of Mn(1.15)Fe(0.85)P(0.51)Si(0.49) reaches 13.9 J/kg.K in a field change of 0-1.5 T. The minimal thermal hysteresis of the compounds is about 10 K, The large magnetocaloric effects and the low materials cost of Mn(2-x)Fe(x)P(0.51)Si(0.49) make them a promising candidate material for room-temperature magnetic refrigeration applications.

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Pages : 2010-4

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Détails

  • Titre original : Magnetocaloric properties of Mn(2-x)Fe(x)P(0.51)Si(0.49).
  • Identifiant de la fiche : 2011-0180
  • Langues : Anglais
  • Source : 4th International Conference on Magnetic Refrigeration at Room Temperature (Thermag IV). Proceedings: Baotou, China, August 23-27, 2010.
  • Date d'édition : 23/08/2010

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