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Document IIF

Hybridation electrolytique des alliages de LaFe(13-x)Si(x) : une méthode simple et efficace pour ajuster la température de Curie.

Electrolytic hydriding of LaFe(13-x)Si(x) alloys: a simple and effective method for adjusting the Curie temperature.

Numéro : sect. 2

Auteurs : LYUBINA J., HANNEMANN U., RYAN M. P., et al.

Résumé

In the family of LaFe(13–x)Si(x) alloys the Curie temperature can be adjusted in the range relevant for near-room temperature magnetic cooling by interstitial hydrogen insertion into the La(Fe,Si)13 lattice. Here, the authors demonstrate a simple, effective, low-temperature and readily available method for tuning the operation temperature of LaFe(13-x)Si(x)-type alloys via electrolytic hydriding. Materials processed by this significantly more economic procedure have the same high level magnetic properties as in high temperature gas-phase processed materials. In addition, they observe that due to a larger lattice-cell volume the ferromagnetic state promotes a higher hydrogen absorption rate due to more facile diffusion. This effect can only be exploited in low-temperature (electrolytic) hydriding.

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Format PDF

Pages : 213-218

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Détails

  • Titre original : Electrolytic hydriding of LaFe(13-x)Si(x) alloys: a simple and effective method for adjusting the Curie temperature.
  • Identifiant de la fiche : 30005537
  • Langues : Anglais
  • Source : 5th International Conference on Magnetic Refrigeration at Room Temperature (Thermag V). Proceedings: Grenoble, France, September 17-20, 2012.
  • Date d'édition : 17/09/2012

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