OH-groups in natural perovskite
- Author(s)
- Anton Beran, Eugen Libowitzky
- Abstract
IR spectra of a natural CaTiO3 perovskite single-crystal showed 2 absorption bands at 3394 and 3326 cm-1 which are attributed to structural OH defects. The 2 bands are weakly pleochroic in a (001) section, but show a more distinct anisotropic behavior in (110) with a stronger component of absorption perpendicular to [001]. A plausible model for the mode of OH incorporation on a preferred at. position is derivable under the assumption of vacancies in the Ca lattice. An OH dipole direction roughly pointing along [110] with O2 oxygens acting as donor oxygens is consistent with the measured pleochroic scheme of the bands.
- Organisation(s)
- Department of Mineralogy and Crystallography
- Journal
- Phase Transitions: a multinational journal
- Volume
- 58
- Pages
- 211 - 215
- No. of pages
- 5
- ISSN
- 0141-1594
- DOI
- https://doi.org/10.1080/01411599608242405
- Publication date
- 1996
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 105116 Mineralogy, 1030 Physics, Astronomy
- Keywords
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/ohgroups-in-natural-perovskite(ed4be131-fbaa-4a8f-a350-d09c75e07a37).html