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Effet magnétocalorique et transition de phase dans les composés Ho(1-x)Gd(x)Co(2)and Ho(1-x)Tb(x)Co(2).

Magnetocaloric effect and phase transformation in Ho(1-x)Gd(x)Co(2) and Ho(1-x)Tb(x)Co(2) compounds.

Auteurs : BALLI M., FRUCHART D., GIGNOUX D.

Résumé

The rare-earth transition metal intermetallics RCo(2) have attracted much attention due to their interesting magnetic properties related to the magnetic instability of the cobalt 3d electrons. This instability induces a first order magnetic transition (FOMT) leading to large magnetic entropy changes in some RCo(2) compounds such as ErCo(2), HoCo(2) and DyCo(2). The authors present recent results obtained with these) solid solutions. Structural, magnetic phase transition and magnetocaloric properties of these materials (0 inferior or equal to 1) were investigated by X-ray diffraction and magnetic measurements and then analyzed in terms of Landau theory.

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Pages : 2007-1

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Détails

  • Titre original : Magnetocaloric effect and phase transformation in Ho(1-x)Gd(x)Co(2) and Ho(1-x)Tb(x)Co(2) compounds.
  • Identifiant de la fiche : 2007-1579
  • Langues : Anglais
  • Source : 2nd International Conference on Magnetic Refrigeration at Room Temperature
  • Date d'édition : 11/04/2007

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