6533b870fe1ef96bd12cef93
RESEARCH PRODUCT
Magnetic excitations in an exchange-coupled tetramer cluster of cobalt (II): a study by inelastic neutron scattering
Carlos J. Gómez-garcíaJuan J. Borrás-almenarMichael AebersoldEugenio CoronadoHans U. GüdelH. Mutkasubject
Materials sciencechemistry.chemical_elementCondensed Matter PhysicsMagnetic susceptibilityInelastic neutron scatteringElectronic Optical and Magnetic MaterialschemistryTetramerPolyoxometalateCluster (physics)DiamagnetismElectrical and Electronic EngineeringAtomic physicsAnisotropyCobaltdescription
Abstract The polyoxometalate K 10 [Co 4 (H 2 O) 2 (PW 9 O 34 ) 2 ].20H 2 O contains a ferromagnetically exchange-coupled tetramer of Co 11 encapsulated in between two diamagnetic molecules (PW 9 O 34 -9 . At 2.5K several inelastic peaks are observed in the energy range 1.5–7 meV, which are assigned to magnetic excitations in the cluster. A tentative interpretation of these data from an anisotropic exchange model yields a cobalt-cobalt interaction of 3meV (24cm -1 ) and an amount of anisotropy J xy / J z ≌0.6. These values are consistent with the magnetic susceptibility measurements.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1992-06-01 | Physica B: Condensed Matter |