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n- and p- Type behaviour of the gold-substituted type-I clathrate, Ba8AuxSi46-x (x = 5.4 and 5.9)

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorJAUSSAUD, Nicolas
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGRAVEREAU, Pierre
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorPECHEV, Stanislav
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCHEVALIER, Bernard
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorMÉNÉTRIER, Michel
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDORDOR, Patrice
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDECOURT, Rodolphe
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGOGLIO, Graziella
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorPOUCHARD, Michel
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCROS, Christian
dc.date.issued2005
dc.identifier.issn1631-0748
dc.description.abstractEnTwo samples of the gold-substituted silicon clathrate, Ba8AuxSi46–x, have been synthesized from the elements at high temperature, one without subsequent treatment (so-called AG for as-grown) and the other after annealing in a silica tube (so-called A for annealed). A structure analysis on single crystal of both samples shows that the x Au content for the AG and A sample is 5.4 and 5.9, respectively. Both samples have been characterized by Seebeck coefficient and electrical conductivity measurements, as well as by 29Si MAS NMR spectroscopy. The AG sample is an n-type semi conductor close to a metal, whereas the A one exhibits a p-type metallic behaviour. The NMR spectra are consistent with a high contribution to the conductivity of the Si(3s) orbitals at the Fermi level
dc.language.isoen
dc.publisherAcadémie des sciences (Paris)
dc.subject.enThermoelectrics
dc.subject.enClathrates
dc.subject.enStructures
dc.subject.enSeebeck
dc.subject.enConductivity
dc.subject.enNMR
dc.title.enn- and p- Type behaviour of the gold-substituted type-I clathrate, Ba8AuxSi46-x (x = 5.4 and 5.9)
dc.typeArticle de revue
dc.identifier.doi10.1016/j.crci.2004.12.004
dc.subject.halChimie/Matériaux
bordeaux.journalComptes Rendus. Chimie
bordeaux.page39-46
bordeaux.volume8
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-00021212
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00021212v1
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