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X-Ray absorption spectroscopic study on LaPdO3

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorKIM, Seung-Joo
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorLEMAUX, Sylvain
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDEMAZEAU, Gérard
hal.structure.identifierNational Nanohybrid Materials Laboratory, School of Chemistry
dc.contributor.authorKIM, Jong-Young
hal.structure.identifierNational Nanohybrid Materials Laboratory, School of Chemistry
dc.contributor.authorCHOY, Jin-Ho
dc.date.issued2002
dc.identifier.issn0959-9428
dc.description.abstractEnPd L-edge XANES and Pd K-edge XANES/EXAFS have been studied to investigate the electronic configuration and local structure of Pd in a new perovskite LaPdO3, which was prepared under high pressure. A white line in the Pd L-edge XANES for LaPdO3 is positioned just in the middle of those for divalent (PdIIO) and tetravalent (Zn2PdIVO4) palladates. The peak intensity for LaPdO3 is also in-between those for PdO and Zn2PdO4. Pd K-edge XANES spectra for PdO is characterized by a shoulder in the threshold edge due to the planar square coordination of Pd. The absence of such a shoulder in Pd K-edge XANES spectra for LaPdO3 and Zn2PdIVO4 suggests a nearly regular octahedral symmetry of (PdO6) in both structures. These XANES results underline that the palladium ions with an oxidation state of III are stabilized with the electronic configuration, t2g6σ*1 in LaPdO3. The Pd K-edge EXAFS analysis confirms that (PdO6) octahedra in LaPdO3 are nearly isotropic and the average PdIII-O bond distance is 2.064 Å, which is compatible with the average PdIII-F bond distance (2.00 Å) estimated from a recent EXAFS study on trivalent palladium fluoride.
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.subject.enX-ray absorption spectroscopy
dc.subject.enLanthanum
dc.subject.enPalladium
dc.subject.enOxides
dc.title.enX-Ray absorption spectroscopic study on LaPdO3
dc.typeArticle de revue
dc.identifier.doi10.1039/B106795H
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Materials Chemistry
bordeaux.page995-1000
bordeaux.volume12
bordeaux.issue4
bordeaux.peerReviewedoui
hal.identifierhal-00711047
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00711047v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Materials%20Chemistry&rft.date=2002&rft.volume=12&rft.issue=4&rft.spage=995-1000&rft.epage=995-1000&rft.eissn=0959-9428&rft.issn=0959-9428&rft.au=KIM,%20Seung-Joo&LEMAUX,%20Sylvain&DEMAZEAU,%20G%C3%A9rard&KIM,%20Jong-Young&CHOY,%20Jin-Ho&rft.genre=article


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