Raman spectroscopy of the laser irradiated titanium dioxide

摘要

Evolution of anatase phase for the TiO₂ nanocrystals at their laser irradiation isudresearched by the method of combinational light dispersion. The observed changes ofudintensity, frequency and halfwidth of TiO₂ phonon lines are interpreted taking intoudaccount the effects of nonstoichiometry, superficial strains and phonon confinement. Theudfound out parameter changes in the low frequency Eg mode show that laser irradiationudresults in substantial improvement of the structural ordering in the area of TiO₆udoctahedrons bonds.