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Investigation of the magnetic and electronic structure of Fe in molecules and chalcogenide systems

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https://osnadocs.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-201006096312
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DC ElementWertSprache
dc.contributor.advisorapl. Prof. Dr. Manfred Neumann
dc.creatorTaubitz, Christian
dc.date.accessioned2010-06-09T13:09:04Z
dc.date.available2010-06-09T13:09:04Z
dc.date.issued2010-06-09T13:09:04Z
dc.identifier.urihttps://osnadocs.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-201006096312-
dc.description.abstractIn this work the electronic and magnetic structure of the crystals Sr2FeMoO6, Fe0.5Cu0.5Cr2S4, LuFe2O4 and the molecules FeStar, Mo72Fe30, W72Fe30 are investigated by means of X-ray spectroscopic techniques. These advanced materials exhibit very interesting properties like magnetoresistance or multiferroic behaviour. In case of the molecules they also could be used as spin model systems. A long standing issue concerning the investigation of these materials are contradicting results found for the magnetic and electronic state of the iron (Fe) ions present in these compounds. Therefore this work focuses on the Fe state of these materials in order to elucidate reasons for these problems. Thereby the experimental results are compared to multiplet simulations.eng
dc.subjectFe valence stateeng
dc.subjectAdvanced materialseng
dc.subjectXPS, XAS, XMCDeng
dc.subjectMagnetoresistanceeng
dc.subject.ddc530 - Physik
dc.titleInvestigation of the magnetic and electronic structure of Fe in molecules and chalcogenide systemseng
dc.typeDissertation oder Habilitation [doctoralThesis]-
thesis.locationOsnabrück-
thesis.institutionUniversität-
thesis.typeDissertation [thesis.doctoral]-
thesis.date2010-06-04-
dc.contributor.refereeProf. Dr. Joachim Wollschläger
dc.subject.bk33.61 - Festkörperphysik
dc.subject.bk33.30 - Atomphysik, Molekülphysik
dc.subject.msc20-04 - Explicit machine computation and programs
dc.subject.pacs71.28.+d - Narrow-band systems; intermediate-valence solids
dc.subject.pacs71.30.+h - Metal-insulator transitions and other electronic transitions
dc.subject.pacs71.38.Ht - Self-trapped or small polarons
dc.subject.pacs71.70.Ch - Crystal and ligand fields
dc.subject.pacs72.20.Dp - General theory, scattering mechanisms
dc.subject.pacs72.25.Dc - Spin polarized transport in semiconductors
dc.subject.pacs72.10.Di - Scattering by phonons, magnons, and other nonlocalized excitations
dc.subject.pacs75.47.Gk - Colossal magnetoresistance
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