Local order around tungsten atoms in tungstate fluorophosphate glasses by X-ray absorption spectroscopy

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dc.contributor.authorPoirier, G. L.
dc.contributor.authorCassanjes, F. C.
dc.contributor.authorMessaddeq, Younes [UNESP]
dc.contributor.authorRibeiro, SJL
dc.contributor.authorMichalowicz, A.
dc.contributor.authorPoulain, M.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Paris 12
dc.contributor.institutionUniv Rennes 1
dc.date.accessioned2014-05-20T15:24:29Z
dc.date.available2014-05-20T15:24:29Z
dc.date.issued2005-11-15
dc.description.abstractX-ray absorption spectroscopy was used to study the local environment of tungsten atoms in NaPO3-BaF2,-WO3 glasses and the results were compared with crystalline references Na2WO4 and WO3. XANES measurements at the W-L-1 edge allowed to determine a distorted octahedral environment of tungsten atoms in these glasses similar to the local order of tungsten in monoclinic WO3. Extended X-ray absorption fine structure (EXAFS) has been used as a local probe to monitor the effect of WO3 concentration on the tungsten environment. Based on an analysis of the EXAFS data, we proposed a three-shell model of oxygen atoms around tungsten as in monoclinic WO3. With increasing WO3 concentration, it was found that R-2 decreases from 1.96 to 1.92 angstrom whereas R-3 increases from 2.07 to 2.12 angstrom. (c) 2005 Elsevier B.V. All rights reserved.en
dc.description.affiliationUNESP, Inst Quim, Araraquara, SP, Brazil
dc.description.affiliationUniv Paris 12, Grp Phys Milieux Denses, F-94010 Creteil, France
dc.description.affiliationUniv Rennes 1, Lab Mat Photon, F-35065 Rennes, France
dc.description.affiliationUnespUNESP, Inst Quim, Araraquara, SP, Brazil
dc.format.extent3644-3648
dc.identifierhttp://dx.doi.org/10.1016/j.jnoncrysol.2005.08.038
dc.identifier.citationJournal of Non-crystalline Solids. Amsterdam: Elsevier B.V., v. 351, n. 46-48, p. 3644-3648, 2005.
dc.identifier.doi10.1016/j.jnoncrysol.2005.08.038
dc.identifier.issn0022-3093
dc.identifier.lattes2998503841917815
dc.identifier.lattes6446047463034654
dc.identifier.urihttp://hdl.handle.net/11449/35088
dc.identifier.wosWOS:000233652500013
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofJournal of Non-Crystalline Solids
dc.relation.ispartofjcr2.488
dc.relation.ispartofsjr0,722
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleLocal order around tungsten atoms in tungstate fluorophosphate glasses by X-ray absorption spectroscopyen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes2998503841917815
unesp.author.lattes6446047463034654
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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