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Magnetic behaviour of the new hydride CePtAlHx
Language
en
Article de revue
This item was published in
Journal of Alloys and Compounds. 2002, vol. 330-332, p. 373-375
Elsevier
English Abstract
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 ...Read more >
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).Read less <
English Keywords
Cerium
Hydriding-dehydriding properties
Magnetization
Ferromagnetism
Origin
Hal imported