Theoretical estimates for proton-NMR spin-lattice relaxation rates of heterometallic spin rings

DC FieldValueLanguage
dc.contributor.authorAllalen, M
dc.contributor.authorSchnack, J
dc.date.accessioned2021-12-23T15:57:13Z-
dc.date.available2021-12-23T15:57:13Z-
dc.date.issued2006
dc.identifier.issn03048853
dc.identifier.urihttps://osnascholar.ub.uni-osnabrueck.de/handle/unios/2790-
dc.description.abstractHeterometallic molecular chromium wheels are fascinating new magnetic materials. We reexamine the available experimental susceptibility data on MCr7 wheels in terms of a simple isotropic Heisenberg Hamiltonian for M = Fe, Ni, Cu, and Zn and find in that FeCr7 needs to be described with an iron-chromium exchange that is different from all other cases. In a second step we model the behavior of the proton spin lattice relaxation rate as a function of applied magnetic field for low temperatures as it is measured in nuclear magnetic resonance (NMR) experiments. It appears that CuCr7 and NiCr7 show an unexpectedly reduced relaxation rate at certain level crossings. (c) 2005 Elsevier B.V. All rights reserved.
dc.language.isoen
dc.publisherELSEVIER SCIENCE BV
dc.relation.ispartofJOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
dc.subjectANTIFERROMAGNETIC RING
dc.subjectantiferromagnetism
dc.subjectCR-8
dc.subjectDYNAMICS
dc.subjectHeisenberg model
dc.subjectMAGNETIC-ANISOTROPY
dc.subjectMaterials Science
dc.subjectMaterials Science, Multidisciplinary
dc.subjectMOLECULAR FERRIC WHEELS
dc.subjectmolecular magnets
dc.subjectPhysics
dc.subjectPhysics, Condensed Matter
dc.subjectspin rings
dc.titleTheoretical estimates for proton-NMR spin-lattice relaxation rates of heterometallic spin rings
dc.typejournal article
dc.identifier.doi10.1016/j.jmmm.2005.09.006
dc.identifier.isiISI:000236784200031
dc.description.volume302
dc.description.issue1
dc.description.startpage206
dc.description.endpage210
dc.contributor.orcid0000-0003-0702-2723
dc.contributor.researcheridA-4079-2008
dc.identifier.eissn18734766
dc.publisher.placePO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
dcterms.isPartOf.abbreviationJ. Magn. Magn. Mater.
crisitem.author.deptFB 04 - Physik-
crisitem.author.deptidfb04-
crisitem.author.orcid0000-0003-0702-2723-
crisitem.author.parentorgUniversität Osnabrück-
crisitem.author.netidScJu137-
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