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Article Dans Une Revue Journal of Alloys and Compounds Année : 2002

Magnetic behaviour of the new hydride CePtAlHx

Résumé

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).

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Matériaux
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Dates et versions

hal-00070926 , version 1 (30-05-2012)

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Jean-Louis Bobet, Bernard Chevalier, François Weill, Jean Etourneau. Magnetic behaviour of the new hydride CePtAlHx. Journal of Alloys and Compounds, 2002, 330-332, pp.373-375. ⟨10.1016/S0925-8388(01)01578-X⟩. ⟨hal-00070926⟩

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