Temperature dependent local atomic displacements in Ru substituted SmFe1-xRuxAsO0.F-85(0).(15) superconductors (Articolo in rivista)

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  • Temperature dependent local atomic displacements in Ru substituted SmFe1-xRuxAsO0.F-85(0).(15) superconductors (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0953-2048/26/6/065005 (literal)
Alternative label
  • Joseph, Boby1 ; Iadecola, Antonella1,2; Simonelli, Laura3; Maugeri, Laura1; Martinelli, Alberto4; Palenzona, Andrea4; Putti, Marina4; Saini, Naurang L.1 (2013)
    Temperature dependent local atomic displacements in Ru substituted SmFe1-xRuxAsO0.F-85(0).(15) superconductors
    in Superconductor science and technology (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Joseph, Boby1 ; Iadecola, Antonella1,2; Simonelli, Laura3; Maugeri, Laura1; Martinelli, Alberto4; Palenzona, Andrea4; Putti, Marina4; Saini, Naurang L.1 (literal)
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  • 26 (literal)
Rivista
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  • 6 (literal)
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  • 6 (literal)
Note
  • ISI Web of Science (WOS) (literal)
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  • 1 Dipartimento di Fisica, Università di Roma \"La Sapienza\", P. le Aldo Moro 2, 00185 Roma, Italy 2 Elettra, Sincrotrone Trieste, Strada Statale 14, Km 163.5, Basovizza, Trieste, Italy 3 European Synchrotron Radiation Facility, 6 RUE Jules Horowitz BP 220 38043 Grenoble Cedex 9 France 4 CNR-SPIN and Universit`a di Genova, via Dodecaneso 33, 16146 Genova, Italy (literal)
Titolo
  • Temperature dependent local atomic displacements in Ru substituted SmFe1-xRuxAsO0.F-85(0).(15) superconductors (literal)
Abstract
  • The local structure of SmFe1-xRuxAsO0.F-85(0.15) (x = 0.0, 0.05, 0.25 and 0.5) superconductors has been investigated by temperature dependent As K-edge extended x-ray absorption fine structure analysis. The effect of Ru substitution remains confined to the iron-arsenide layer but neither the static disorder nor the Fe-As bond strength suffers any change for x <= 0.25. With further Ru substitution the static disorder increases while the Fe-As bond strength remains unchanged. Also, the Ru-As distance (similar to 2.42 angstrom), different from the Fe-As distance (similar to 2.39 angstrom), does not show any change in its force constant with Ru substitution. These observations suggest that the SmFe1-xRuxAsO0.F-85(0).(15) system breaks down into coexisting local electronic phases on isoelectric substitution in the active FeAs layer. (literal)
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