Fe valence state of Sr2FeMoO6 probed by x-ray absorption spectroscopy: The sample age matters (Articolo in rivista)

Type
Label
  • Fe valence state of Sr2FeMoO6 probed by x-ray absorption spectroscopy: The sample age matters (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Alternative label
  • Kuepper, K; Raekers, M; Taubitz, C; Hesse, H; Neumann, M; Young, AT; Piamonteze, C; Bondino, F; Prince, KC (2008)
    Fe valence state of Sr2FeMoO6 probed by x-ray absorption spectroscopy: The sample age matters
    in Journal of applied physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Kuepper, K; Raekers, M; Taubitz, C; Hesse, H; Neumann, M; Young, AT; Piamonteze, C; Bondino, F; Prince, KC (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 104 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • \"[Kuepper, K.] Forschungszentrum Dresden Rossendorf, Inst Ion Beam Phys & Mat Res, D-01314 Dresden, Germany; [Raekers, M.; Taubitz, C.; Hesse, H.; Neumann, M.] Univ Osnabruck, Dept Phys, D-49069 Osnabruck, Germany; [Young, A. T.; Piamonteze, C.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA; [Bondino, F.] Lab Nazl TASC INFM CNR, Basovizza Trieste, Italy; [Prince, K. C.] Sincrotrone Trieste, I-34012 Trieste, Italy (literal)
Titolo
  • Fe valence state of Sr2FeMoO6 probed by x-ray absorption spectroscopy: The sample age matters (literal)
Abstract
  • Several studies of the magnetic properties of Sr2FeMoO6, a half metallic double perovskite showing large magneto resistance effects at room temperature, by means of site specific x-ray absorption spectroscopy (XAS) have led to very different results concerning the Fe valence state. We present a detailed study of a Sr2FeMoO6 sample, which has been probed by means of XAS and x-ray magnetic circular dichroism (XMCD) over several years. We find a mixed valent Fe2+, Fe3+ state, which shifts toward Fe3+ with time. An understanding of such a chemical change is of importance for potential applications of Sr2FeMoO6 and related transition metal oxides. (C) 2008 American Institute of Physics. (literal)
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