XAFS study on Sr2FeMoxW1-xO6 double perovskite series (Articolo in rivista)

Type
Label
  • XAFS study on Sr2FeMoxW1-xO6 double perovskite series (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Bardelli, F; Meneghini, C; Mobilio, S; Ray, S; Sarma, DD (2006)
    XAFS study on Sr2FeMoxW1-xO6 double perovskite series
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Bardelli, F; Meneghini, C; Mobilio, S; Ray, S; Sarma, DD (literal)
Pagina inizio
  • 226 (literal)
Pagina fine
  • 229 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 126 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • European Synchrotron Radiat Facil, INFM, GILDA, F-38043 Grenoble 9, France; Univ Roma Tre, Dipartimento Fis, I-00146 Rome, Italy; Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Rome, Italy; Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, Karnataka, India; Indian Inst Sci, Bangalore & Condensed Matter Theory Unit, Jawaharlal Nehru Ctr Adv Res, Bangalore 560012, Karnataka, India (literal)
Titolo
  • XAFS study on Sr2FeMoxW1-xO6 double perovskite series (literal)
Abstract
  • Sr2FeMoO6 oxide exhibit a half-metallic ferromagnetic (HMFM) ground state and has peculiar magnetic and magnetotransport properties that are very interesting both for applications and for fundamental research in the field of heavily correlated electron systems. In contrast to SrFeMoO6, Sr2FeWO6 is an insulator with an antiferromagnetic (AFM) ground state. Doping Sr2FeMoO6 with W, obtaining Sr2FeMoxW1-xO6 compounds, a composition driven metal to insulator transition (MIT) occurs at x(c) similar to 0.25. The nature of such transition is still a matter of debate and different possible scenarios have been proposed. This paper reports a detailed X-ray absorption spectroscopy (XAS) study on the Sr2FeMoxW1-xO6 series as a function of composition (0 <= x <= 1). The results demonstrate the presence of an abrupt change of the local atomic structure at x(c) that represents the structural counterpart of the electronic changes associated with the metal insulator transition. (c) 2005 Elsevier B.V. All rights reserved. (literal)
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