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Analytical determination of the {Ln-Aminoxyl radical} exchange interaction taking into account both the ligand-field effect and the spin-orbit coupling of the lanthanide ion (Ln = DyIII and HoIII)

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorKAHN, Myrtil L.
hal.structure.identifierLaboratoire Louis Néel [LLN]
dc.contributor.authorBALLOU, Rafik
hal.structure.identifierLaboratoire de Chimie Appliquée de l'État Solide [LCAES]
dc.contributor.authorPORCHER, Pierre
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorKAHN, Olivier
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorSUTTER, Jean-Pascal
dc.date.issued2002
dc.identifier.issn0947-6539
dc.description.abstractEnNumerous compounds in which a paramagnetic LnIII ion is in an exchange interaction with a second spin carrier, such as a transition metal ion or an organic radical, have been described. However, except for GdIII, very little has been reported about the magnitude of the interactions. Indeed, for these ions both the ligand-field effects and the exchange interactions between the magnetic centers become relevant in the same temperature range; this makes the analysis of the magnetic behavior of such compounds more difficult. In this study, quantitative analyses of the thermal variations of the static isothermal initial magnetic susceptibility measured on powdered samples of the {Ln(NO3)3[organic radical]2} (Ln=DyIII and HoIII) compounds were performed. The ligand-field effects on the Ln ions were taken into account, and the exchange interactions within a molecule were treated exactly within an appropriate Racah formalism. Values of the intramolecular {Ln-aminoxyl radical} exchange parameter have thus been rigorously deduced for both the Dy Kramers and Ho non-Kramers ion-based compounds. Ferromagnetic {Ln-radical} interactions are found for both the Dy and Ho derivatives with J=8 cm−1 and J=4.5 cm−1, respectively.
dc.language.isoen
dc.publisherWiley-VCH Verlag
dc.subject.enRadicals
dc.subject.enOrbital momentum
dc.subject.enCrystal field effect
dc.subject.enLanthanides
dc.subject.enMagnetic properties
dc.title.enAnalytical determination of the {Ln-Aminoxyl radical} exchange interaction taking into account both the ligand-field effect and the spin-orbit coupling of the lanthanide ion (Ln = DyIII and HoIII)
dc.typeArticle de revue
dc.identifier.doi10.1002/1521-3765(20020118)8:2
dc.subject.halChimie/Matériaux
bordeaux.journalChemistry - A European Journal
bordeaux.page525-531
bordeaux.volume8
bordeaux.issue2
bordeaux.peerReviewedoui
hal.identifierhal-00704854
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00704854v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Chemistry%20-%20A%20European%20Journal&rft.date=2002&rft.volume=8&rft.issue=2&rft.spage=525-531&rft.epage=525-531&rft.eissn=0947-6539&rft.issn=0947-6539&rft.au=KAHN,%20Myrtil%20L.&BALLOU,%20Rafik&PORCHER,%20Pierre&KAHN,%20Olivier&SUTTER,%20Jean-Pascal&rft.genre=article


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