Raman spectra of titanium dioxide (anatase, rutile) with identified oxygen isotopes (16, 17, 18)
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- 31 August 2012
- journal article
- Published by Royal Society of Chemistry (RSC) in Physical Chemistry Chemical Physics
- Vol. 14 (42), 14567-14572
- https://doi.org/10.1039/c2cp42763j
Abstract
Six representative isotope-labeled samples of titanium dioxide were synthesized: Ti16O2, Ti17O2 and Ti18O2, each in anatase and rutile forms. Their Raman scattering was analyzed at temperatures down to 5 K. Spectral assignment was supported by numerical simulation using DFT calculations. The combination of experimental and theoretical Raman frequencies with the corresponding isotopic shifts allowed us to address various still-open questions about the second-order Raman scattering in rutile, and the analysis of overlapping features in the anatase spectrum.Keywords
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