THE INCORPORATION OF HYDROGEN IN TIO2 DEDUCED FROM POLARIZED RAMAN-SCATTERING

Autor(en): KLAUER, S
WOHLECKE, M
Stichwörter: BEHAVIOR-TYPE METHOD; CUBIC-CRYSTALS; DEFECTS; IMPURITY AND DEFECT ABSORPTION IN SOLIDS; INFRARED AND RAMAN SPECTRA AND SCATTERING; PHONONS AND VIBRATION IN CRYSTAL LATTICES, LOCALIZED MODES; Physics; Physics, Multidisciplinary
Erscheinungsdatum: 1992
Herausgeber: EDITIONS PHYSIQUE
Journal: EUROPHYSICS LETTERS
Volumen: 20
Ausgabe: 5
Startseite: 439
Seitenende: 443
Zusammenfassung: 
The OH stretch mode in rutile (TiO2) has been investigated with polarized Raman scattering. The scattering intensities of the defect ensemble were analysed using an extension of the Raman-Behaviour-Type method to tetragonal host crystals. This allows us to determine the local symmetry of the defect and to clearly exclude specific models, which could not be discriminated so far by IR spectroscopy. The C1h(001) site symmetry detected for the main absorption line is consistent with the sites predicted by potential calculations. The satellite peak interpreted as OH defects associated with Al3+ impurities exhibits a higher symmetry, C2v[001] pointing to a site on the common [110] edges of the oxygen octahedra.
ISSN: 02955075
DOI: 10.1209/0295-5075/20/5/010

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