0000000000929425

AUTHOR

Christian Lenser

showing 2 related works from this author

Nanosession: Valence Change Memories - A Look Inside

2013

Materials scienceCondensed matter physicsValence (psychology)
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Spectroscopic study of the electric field induced valence change of Fe-defect centers in SrTiO(3)

2011

The electrochemical changes induced by an electric field in Fe-doped SrTiO(3) have been investigated by X-ray absorption spectroscopy (XANES and EXAFS), electron paramagnetic resonance (EPR) and Raman spectroscopy. A detailed study of the Fe dopant in the regions around the anode and cathode reveals new insights into the local structure and valence state of Fe in SrTiO(3) single crystals. The ab initio full multiple-scattering XANES calculations give an evidence of the oxygen vacancy presence in the first coordination shell of iron. Differences in the length and disorder of the Fe-O bonds as extracted from EXAFS are correlated to the unequivocal identification of the defect type by compleme…

010302 applied physicsValence (chemistry)Absorption spectroscopyExtended X-ray absorption fine structureChemistryAb initioGeneral Physics and Astronomy02 engineering and technology021001 nanoscience & nanotechnology01 natural sciencesXANESlaw.inventionJsymbols.namesakeCrystallographyOxidation statelaw0103 physical sciencesddc:540symbolsPhysical and Theoretical Chemistry0210 nano-technologyElectron paramagnetic resonanceRaman spectroscopy
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