Document IIF

Etude portant sur les alliages Gd-Si-Ge utilisant du Gd chinois.

Study on Gd-Si-Ge alloys using Chinese Gd.

Auteurs : WU W., LU D. W.

Résumé

To evaluate the possibility of using Gd-Si-Ge alloys in magnetic refrigerators, samples of Gd-Si-Ge alloys were made of Chinese Gd. The magnetocaloric effect of samples was estimated by the magnetic entropy change, which were calculated from the M-H curves according to a Maxwell relation. The first order phase transformation was destroyed due to the impurities in the commercial Gd, so that no giant magnetocaloric effect was found. The samples made of purified Gd exhibit a first order phase transformation, and the magnetic entropy change was basically consistent with the published data of the AMES laboratory, USA. These materials were then used in a reciprocating prototype of magnetic refrigerator, and the result of the experiment was comparable with that using Gd. This work proves that Gd-Si-Ge alloys made of Chinese Gd can be utilized in magnetic refrigerators.

Documents disponibles

Format PDF

Pages : 2005-4

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Study on Gd-Si-Ge alloys using Chinese Gd.
  • Identifiant de la fiche : 2006-1263
  • Langues : Anglais
  • Source : 1st International Conference on Magnetic Refrigeration at Room Temperature
  • Date d'édition : 27/09/2005

Liens


Voir d'autres communications du même compte rendu (37)
Voir le compte rendu de la conférence