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Delafossite oxides containing vanadium(III): Preparation and magnetic properties

hal.structure.identifierLaboratoire de Chimie des Matériaux Solides
dc.contributor.authorEL ATAOUI, Khadija
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDOUMERC, Jean-Pierre
hal.structure.identifierLaboratoire de Chimie des Matériaux Solides
dc.contributor.authorAMMAR, Abdelaziz
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGRENIER, Jean-Claude
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorFOURNÈS, Léopold
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorWATTIAUX, Alain
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorPOUCHARD, Michel
dc.date.issued2005
dc.identifier.issn1293-2558
dc.description.abstractEnAlthough the pure delafossite CuVO2 does not exist, the present study well confirms that large amounts of vanadium(III) can be incorporated into copper based delafossites without reducing Cu+ into metallic copper, as several solid solutions CuM1−xVxO2 exist where M=Ga, Cr (xless-than-or-equals, slant0.50) or Fe (xless-than-or-equals, slant0.67). Vanadium(III) has a peculiar magnetic behavior. Actually Vsingle bondV antiferromagnetic interactions appear rather large at high temperature, but as the temperature decreases magnetic data can be (at least qualitatively) interpreted assuming the formation of Vsingle bondV pairs. The bonding involves one of the two electrons of the 3d2 (Click to view the MathML source) configuration of V(III)-atoms having a 6-fold D3d coordination, the one occupying the e orbital that lies in the (M, V) layers of the delafossite structure. The behavior changes from a rather 2D ferrimagnetic-like one to a 3D antiferromagnetic one with a Néel temperature larger than 4.5 K in the case of CuFe1−xVxO2 as determined from a Mössbauer study.
dc.language.isoen
dc.publisherElsevier
dc.subjectDelafossite oxides
dc.subjectMagnetic properties
dc.subjectMössbauer resonance
dc.subjectCopper vanadium(III) oxide
dc.typeArticle de revue
dc.identifier.doi10.1016/j.solidstatesciences.2004.11.030
dc.subject.halChimie/Matériaux
bordeaux.journalSolid State Sciences
bordeaux.page710-717
bordeaux.volume7
bordeaux.issue6
bordeaux.peerReviewedoui
hal.identifierhal-00094641
hal.version1
hal.popularnon
hal.audienceInternationale
dc.title.itDelafossite oxides containing vanadium(III): Preparation and magnetic properties
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00094641v1
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