X-Ray absorption spectroscopic study on LaPdO3
hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
dc.contributor.author | KIM, Seung-Joo | |
hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
dc.contributor.author | LEMAUX, Sylvain | |
hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
dc.contributor.author | DEMAZEAU, Gérard | |
hal.structure.identifier | National Nanohybrid Materials Laboratory, School of Chemistry | |
dc.contributor.author | KIM, Jong-Young | |
hal.structure.identifier | National Nanohybrid Materials Laboratory, School of Chemistry | |
dc.contributor.author | CHOY, Jin-Ho | |
dc.date.issued | 2002 | |
dc.identifier.issn | 0959-9428 | |
dc.description.abstractEn | Pd 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.iso | en | |
dc.publisher | Royal Society of Chemistry | |
dc.subject.en | X-ray absorption spectroscopy | |
dc.subject.en | Lanthanum | |
dc.subject.en | Palladium | |
dc.subject.en | Oxides | |
dc.title.en | X-Ray absorption spectroscopic study on LaPdO3 | |
dc.type | Article de revue | |
dc.identifier.doi | 10.1039/B106795H | |
dc.subject.hal | Chimie/Matériaux | |
bordeaux.journal | Journal of Materials Chemistry | |
bordeaux.page | 995-1000 | |
bordeaux.volume | 12 | |
bordeaux.issue | 4 | |
bordeaux.peerReviewed | oui | |
hal.identifier | hal-00711047 | |
hal.version | 1 | |
hal.popular | non | |
hal.audience | Internationale | |
hal.origin.link | https://hal.archives-ouvertes.fr//hal-00711047v1 | |
bordeaux.COinS | ctx_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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