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Investigation of the new P′3-Na<sub>0.60</sub>VO<sub>2</sub> phase: structural and physical properties

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorSZAJWAJ, Olivier
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGAUDIN, Etienne
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierCentre de Ressources en Microscopie Electronique et Microanalyse [CREMEN]
dc.contributor.authorWEILL, François
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDARRIET, Jacques
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDELMAS, Claude
dc.date.issued2009
dc.identifier.issn0020-1669
dc.description.abstractEnA new layered phase Na<sub>0.60</sub>VO<sub>2</sub> was synthesized by chemical deintercalation of sodium from the pristine compound O3-NaVO<sub>2</sub>. The Na<sub>0.60</sub>VO<sub>2</sub> compound exhibits a distorted P′3-type oxygen stacking (AABBCC) with an average monoclinic unit cell containing <i>a</i> = 4.9862(14) Å, <i>b</i> = 2.8708(8) Å, <i>c</i> = 5.917(2) Å, and β = 104.36(3)°. A modulated structure was observed by transmission electron microscopy and X-ray diffraction (XRD) measurements. Indexation of the XRD pattern was achieved by using the <b>q</b> vector equal to 0.44<b><i>b</i></b><b>*</b>, and the 4D superspace group <i>C</i>2/<i>m</i> (0 β 0) s0 was then deduced. The specific heat measurement showed a strong correlated system with a γ value of around 20 mJ·mol<sup>−1</sup>·K<sup>−2</sup>. The electrical conductivity shows a semiconductor-like behavior with an activation energy of 0.52 eV. A paramagnetic behavior of the susceptibility is observed below room temperature with a Curie constant equal to <i>C</i> = 0.076 emu·K<sup>−1</sup>·mol<sup>−1</sup>·Oe<sup>−1</sup>. To explain this small value, a model of pseudotriangular clusters of vanadium with a random distribution of V<sup>3+</sup> and V<sup>4+</sup> was considered.
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.title.enInvestigation of the new P′3-Na<sub>0.60</sub>VO<sub>2</sub> phase: structural and physical properties
dc.typeArticle de revue
dc.identifier.doi10.1021/ic9008653
dc.subject.halChimie/Matériaux
bordeaux.journalInorganic Chemistry
bordeaux.page9147-9154
bordeaux.volume48
bordeaux.issue19
bordeaux.peerReviewedoui
hal.identifierhal-00426246
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00426246v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.jtitle=Inorganic%20Chemistry&amp;rft.date=2009&amp;rft.volume=48&amp;rft.issue=19&amp;rft.spage=9147-9154&amp;rft.epage=9147-9154&amp;rft.eissn=0020-1669&amp;rft.issn=0020-1669&amp;rft.au=SZAJWAJ,%20Olivier&amp;GAUDIN,%20Etienne&amp;WEILL,%20Fran%C3%A7ois&amp;DARRIET,%20Jacques&amp;DELMAS,%20Claude&amp;rft.genre=article


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