Raman spectra of titanium dioxide (anatase, rutile) with identified oxygen isotopes (16, 17, 18)
Otakar FrankMarkéta ZukalováJ. Heyrovský Institute of Physical Chemistry, v.v.i. Academy of Sciences of the Czech Republic, Dolejskova 3, 18223 Prague 8, Czech RepublicBarbora Pitňa LáskováJ. Heyrovský Institute of Physical Chemistry, v.v.i. Academy of Sciences of the Czech Republic, Dolejskova 3, 18223 Prague 8, Czech RepublicJ. KürtiInstitute of Physics, Loránd Eötvös University, Pázmány Péter sétány 1/A, H-1117 Budapest, HungaryJános KoltaiInstitute of Physics, Loránd Eötvös University, Pázmány Péter sétány 1/A, H-1117 Budapest, HungaryLadislav KavanJ. Heyrovský Institute of Physical Chemistry, v.v.i. Academy of Sciences of the Czech Republic, Dolejskova 3, 18223 Prague 8, Czech Republic
2012en
ABI
Аннотация
Six representative isotope-labeled samples of titanium dioxide were synthesized: Ti(16)O(2), Ti(17)O(2) and Ti(18)O(2), 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.
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