EXAFS study of LaNi5 and LaNi4.5Al0.5 (Articolo in rivista)

Type
Label
  • EXAFS study of LaNi5 and LaNi4.5Al0.5 (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.jallcom.2006.06.068 (literal)
Alternative label
  • Palumbo, O; Castellano, C; Paolone, A; Cordero, F; Cantelli, R; Nakamura, Y; Akiba, E (2007)
    EXAFS study of LaNi5 and LaNi4.5Al0.5
    in Journal of alloys and compounds
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Palumbo, O; Castellano, C; Paolone, A; Cordero, F; Cantelli, R; Nakamura, Y; Akiba, E (literal)
Pagina inizio
  • 33 (literal)
Pagina fine
  • 36 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 433 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy; Univ Roma La Sapienza, CNR, INFM, I-00185 Rome, Italy; CNR, INFM, Lab Reg SuperMat, Salerno, Italy; CNR, ISC, Area Ricerca Roma Tor Vergata, I-00133 Rome, Italy; AIST, Tsukuba, Ibaraki 3058565, Japan (literal)
Titolo
  • EXAFS study of LaNi5 and LaNi4.5Al0.5 (literal)
Abstract
  • We report extended X-ray absorption fine structure measurements in the temperature range between 20 and 300 K at the Ni K absorption edge on LaNi5 and LaNi1.5Al0.5 before and after hydrogen charging. In agreement with previous studies, an increase of the Ni-Ni distance has been found when Ni atoms are partially substituted by A]. For all the samples, the Debye-Waller factors of the Ni-Ni first sub-shells have been fitted with a correlated Debye model plus a temperature independent static disorder, obtaining a Debye temperature dependence on the Al content. Even a small hydrogen content has been found to increase the static contribution to the local disorder around Ni atoms. (c) 2006 Elsevier B.V. All rights re nerved. (literal)
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