Divalent-to-trivalent transition of Sm in SmS: Implications for the high-pressure magnetically ordered state (Articolo in rivista)

Type
Label
  • Divalent-to-trivalent transition of Sm in SmS: Implications for the high-pressure magnetically ordered state (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Annese, E; Barla, A; Dallera, C; Lapertot, G; Sanchez, JP; Vanko, G (2006)
    Divalent-to-trivalent transition of Sm in SmS: Implications for the high-pressure magnetically ordered state
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Annese, E; Barla, A; Dallera, C; Lapertot, G; Sanchez, JP; Vanko, G (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 73 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Modena, INFM, Dipartimento Fis, I-41100 Modena, Italy; CEA, Dept Rech Fondamentale Matiere Condensee, F-38054 Grenoble 9, France; Politecn Milan, INFM, Dipartimento Fis, I-20133 Milan, Italy; European Synchrotron Radiat Facil, F-38043 Grenoble, France (literal)
Titolo
  • Divalent-to-trivalent transition of Sm in SmS: Implications for the high-pressure magnetically ordered state (literal)
Abstract
  • We present a resonant x-ray emission study of the pressure-induced valence transition of SmS. Spectra excited at the L-3 absorption edge of Sm ions were recorded at applied pressures ranging from 1 to 18 GPa, at room temperature. Thanks to its extreme sensitivity to the electronic configuration, resonant inelastic x-ray emission is well suited to follow precisely the small valence changes in the high pressure region. The Sm valence is found to increase from 2.7 at 1 GPa to 3 at 18 GPa, and the trivalent state is reached at p(c)similar to 13 GPa. Our results imply that the transition to the trivalent state at p(c) is not accompanied by any detectable change of the magnetic properties, as inferred from the nuclear forward scattering measurements, with respect to those of the intermediate valent state (p > 2 GPa). (literal)
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