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Impact of lithium and potassium cations on the Mössbauer spectral and electrical properties of two mixed-valence iron(II/III) phosphites

hal.structure.identifierDepartment of Chemistry
dc.contributor.authorGRANDJEAN, Fernande
hal.structure.identifierDepartment of Chemistry
dc.contributor.authorLONG, Gary
hal.structure.identifierDépartement de Physique [CESAM/Q-MAT, SPIN]
dc.contributor.authorEVRARD, Roger
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCHUNG, U-Chan
hal.structure.identifierFacultad de Ciencia y Tecnologia
dc.contributor.authorLARREA, Edurne
hal.structure.identifierFacultad de Ciencia y Tecnologia
dc.contributor.authorRUIZ DE LARRAMENDI, Idoia
hal.structure.identifierFacultad de Ciencia y Tecnologia
dc.contributor.authorARRIORTUA, María Isabel
hal.structure.identifierFacultad de Ciencia y Tecnologia
dc.contributor.authorROJO, Teófilo
dc.date.issued2020-07-14
dc.identifier.issn0897-4756
dc.description.abstractEnBased on the combined corrected chemical analysis, the single-crystal X-ray structural results, and the revised Mössbauer spectral analysis, the best formulation of Li1.4(1)[Fe4.4(1)IIFe0.6(1)III(HPO3)6]·1.47(3) H2O, 1b, has been obtained; also, from a revised Mössbauer spectral analysis, a revised formulation of K0.95(5)[Fe3.95(5)IIFe1.05(5)III(HPO3)6]·0.5 H2O, 2m, has been obtained. The revised analysis of the room-temperature Mössbauer spectral parameters for both compounds is consistent with their crystallographic structures and the different nature and occupancies of the Li+ and K+ crystallographic sites. From a detailed analysis of the impedance spectroscopy measurements of Li1.43[Fe4.43IIFe0.57III(HPO3)6]·1.5 H2O, 1, between 123 and 189 °C, two processes involving the electric charge response to the ac electric field have been identified. An activation energy for the charge transfer in 1 of 0.91(2) eV or 7340(160) cm–1 has been obtained; the charge transfer may involve a correlated hopping of the Li+ ion and an electron between the iron(II) and iron(III) ions.
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.title.enImpact of lithium and potassium cations on the Mössbauer spectral and electrical properties of two mixed-valence iron(II/III) phosphites
dc.typeArticle de revue
dc.identifier.doi10.1021/acs.chemmater.0c00354
dc.subject.halChimie/Matériaux
bordeaux.journalChemistry of Materials
bordeaux.page5534-5540
bordeaux.volume32
bordeaux.issue13
bordeaux.peerReviewedoui
hal.identifierhal-02972707
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02972707v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Chemistry%20of%20Materials&rft.date=2020-07-14&rft.volume=32&rft.issue=13&rft.spage=5534-5540&rft.epage=5534-5540&rft.eissn=0897-4756&rft.issn=0897-4756&rft.au=GRANDJEAN,%20Fernande&LONG,%20Gary&EVRARD,%20Roger&CHUNG,%20U-Chan&LARREA,%20Edurne&rft.genre=article


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