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Atomic Scale Evidence of the Switching Mechanism in a Photomagnetic CoFe Dinuclear Prussian Blue Analogue

hal.structure.identifierInstitut de minéralogie, de physique des matériaux et de cosmochimie [IMPMC]
dc.contributor.authorJAFRI, Sadaf Fatima
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierCentre de Recherche Paul Pascal [CRPP]
dc.contributor.authorKOUMOUSI, Evangelia
hal.structure.identifierInstitut de minéralogie, de physique des matériaux et de cosmochimie [IMPMC]
dc.contributor.authorARRIO, Marie-Anne
hal.structure.identifierInstitut de minéralogie, de physique des matériaux et de cosmochimie [IMPMC]
dc.contributor.authorJUHIN, Amélie
hal.structure.identifierCentre de Recherche Paul Pascal [CRPP]
dc.contributor.authorMITCOV, Dmitri
hal.structure.identifierCentre de Recherche Paul Pascal [CRPP]
dc.contributor.authorROUZIÈRES, Mathieu
hal.structure.identifierCentre de Recherche Paul Pascal [CRPP]
dc.contributor.authorDECHAMBENOIT, Pierre
hal.structure.identifierCollege of Chemistry, Central China Normal Univesity
dc.contributor.authorLI, Dongfeng
hal.structure.identifierSynchrotron SOLEIL [SSOLEIL]
dc.contributor.authorOTERO, Edwige
hal.structure.identifierEuropean Synchrotron Radiation Facility [ESRF]
dc.contributor.authorWILHELM, Fabrice
hal.structure.identifierEuropean Synchrotron Radiation Facility [ESRF]
dc.contributor.authorROGALEV, Andrei
hal.structure.identifierSynchrotron SOLEIL [SSOLEIL]
dc.contributor.authorJOLY, Loic
hal.structure.identifierInstitut de Physique et Chimie des Matériaux de Strasbourg [IPCMS]
dc.contributor.authorKAPPLER, Jean-Paul
hal.structure.identifierInstitut Parisien de Chimie Moléculaire [IPCM]
dc.contributor.authorCARTIER DIT MOULIN, Christophe
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorMATHONIÈRE, Corine
hal.structure.identifierCentre de Recherche Paul Pascal [CRPP]
dc.contributor.authorCLÉRAC, Rodolphe
hal.structure.identifierSynchrotron SOLEIL [SSOLEIL]
hal.structure.identifierInstitut de minéralogie, de physique des matériaux et de cosmochimie [IMPMC]
dc.contributor.authorSAINCTAVIT, Philippe
dc.date.issued2019-02-27
dc.identifier.issn0002-7863
dc.description.abstractEnMolecular complexes based on Prussian Blue analogues have recently attracted considerable interest for their unique bistable properties combined to ultimately reduced dimensions. Here, we investigate the first dinuclear FeCo complex exhibiting both thermal and photomagnetic bistability in the solid state. Through an experimental and theoretical approach combining local techniques—X-ray absorption spectroscopy (XAS), X-ray magnetic circular dichroism (XMCD), and ligand field multiplet calculations—we were able to evidence the changes occurring at the atomic scale in the electronic and magnetic properties. The spectroscopic studies were able to fully support at the atomic level the following conclusions: (i) the 300 K phase and the light-induced excited state at 4 K are both built from FeLSIII–CoHSII paramagnetic pairs with no apparent reorganization of the local structure, (ii) the 100 K phase is composed of FeLSII–CoLSIII diamagnetic pairs, and (iii) the light-induced excited state is fully relaxed at an average temperature of ≈50 K. In the paramagnetic phase at 2 K, XAS and XMCD reveal that both Fe and Co ions exhibit a rather large orbital magnetic moment (0.65 μB and 0.46 μB, respectively, under an external magnetic induction of 6.5 T), but it was not possible to detect a magnetic interaction between spin centers above 2 K.
dc.description.sponsorshipCommutateur Photo-Magnétique Unimoléculaire - ANR-10-BLAN-0712
dc.description.sponsorshipAssociation Contrôlée de Molécules-Aimants pour une nouvelle Génération de Matériaux magnétiques
dc.description.sponsorshipSynthèse et étude de chaines aimant photocommutables
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.subject.enAtomic Scale Evidence
dc.subject.enPhotomagnetic CoFe Dinuclear Prussian Blue Analogue
dc.title.enAtomic Scale Evidence of the Switching Mechanism in a Photomagnetic CoFe Dinuclear Prussian Blue Analogue
dc.typeArticle de revue
dc.identifier.doi10.1021/jacs.8b10484
dc.subject.halChimie
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of the American Chemical Society
bordeaux.page3470-3479
bordeaux.volume141
bordeaux.issue8
bordeaux.peerReviewedoui
hal.identifierhal-02051845
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02051845v1
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