Magnetic behaviour of the new hydride CePtAlHx
Langue
en
Article de revue
Ce document a été publié dans
Journal of Alloys and Compounds. 2002, vol. 330-332, p. 373-375
Elsevier
Résumé en anglais
CePtAl absorbs hydrogen up to a concentration of 1.1(1)H mol−1 at room temperature. The formation of this hydride CePtAlH1.1 that loses hydrogen in air corresponds to a plateau pressure of 0.08-0.1 MPa. Its absorption-desorption ...Lire la suite >
CePtAl absorbs hydrogen up to a concentration of 1.1(1)H mol−1 at room temperature. The formation of this hydride CePtAlH1.1 that loses hydrogen in air corresponds to a plateau pressure of 0.08-0.1 MPa. Its absorption-desorption is practically reversible which can present a potential interest for applications (but only a few due to the high price of the material) around room temperature and normal pressure. Hydrogenation of CePtAl induces both: (i) a structural transition but the structure of the hydride is unknown at present; (ii) an increase of its ferromagnetic character; the hydride has a Curie temperature Tc=11.6(2) K twice greater than that determined for the initial intermetallic (i.e. 5.6(2) K).< Réduire
Mots clés en anglais
Cerium
Hydriding-dehydriding properties
Magnetization
Ferromagnetism
Origine
Importé de halUnités de recherche