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Hydrogenation of CeNi : hydride formation, structure and magnetic properties

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorBOBET, Jean-Louis
hal.structure.identifierInstitute of General and Inorganic Chemistry
dc.contributor.authorGRIGOROVA, Elie
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCHEVALIER, Bernard
hal.structure.identifierInstitute of General and Inorganic Chemistry
dc.contributor.authorKHRUSSANOVA, Maria
hal.structure.identifierInstitute of General and Inorganic Chemistry
dc.contributor.authorPESHEV, Pavel
dc.date.issued2006
dc.identifier.issn0966-9795
dc.description.abstractEnThe hydrogenation at different temperatures and hydrogen pressures of the binary intermetallic compound CeNi was studied. A hydride with the composition CeNiH2.9(1) was obtained by hydriding the host alloy at 293 K and PH2=1 MPa. With increasing temperature of hydriding a reaction of hydrogenolysis of CeNi occurred with formation of a stable two-phase product composed of CeH2.51 and CeNi5. The newly prepared hydride CeNiH2.9(1) was found to be isostructural with CeNi (orthorhombic, CrB-type, S.G. Cmcm). On the basis of refinement of the XRD patterns of both the intermetallic compound and its hydride, the atomic positions of Ce and Ni and the interatomic distances were determined. The probable sites of hydrogen intersection in the host structure were proposed. Moreover, a valence transition of cerium from intermediate valence (CeNi) to the trivalent state (CeNiH2.9) was evidenced by magnetization measurements.
dc.language.isoen
dc.publisherElsevier
dc.subject.enRare-earth intermetallics
dc.subject.enCrystal chemistry of intermetallics
dc.subject.enMagnetic properties
dc.subject.enDiffraction (electron
dc.subject.enneutron and X-ray)
dc.title.enHydrogenation of CeNi : hydride formation, structure and magnetic properties
dc.typeArticle de revue
dc.identifier.doi10.1016/j.intermet.2005.05.006
dc.subject.halChimie/Matériaux
bordeaux.journalIntermetallics
bordeaux.page208-212
bordeaux.volume14
bordeaux.issue2
bordeaux.peerReviewedoui
hal.identifierhal-00015800
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00015800v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Intermetallics&rft.date=2006&rft.volume=14&rft.issue=2&rft.spage=208-212&rft.epage=208-212&rft.eissn=0966-9795&rft.issn=0966-9795&rft.au=BOBET,%20Jean-Louis&GRIGOROVA,%20Elie&CHEVALIER,%20Bernard&KHRUSSANOVA,%20Maria&PESHEV,%20Pavel&rft.genre=article


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