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Pure and La-doped titania (TiO_2) nanopowders are synthesized by sol-gel technology. The crystallite sizes determined by X-ray diffraction measurements range from 10 to 15 nm. Dependence of structural and morphological characteristics of nanopowders on synthesis conditions and La^{3+} content is investigated by the Raman spectroscopy. Very intensive modes observed in the Raman spectra of all nanopowder...
Titanium dioxide (TiO_2) nanopowders doped with 0.65, 1, 2, 3 and 4 wt.% of lanthanum ions (La^{3+}) were synthesized by sol-gel technology. Dependence of structural and morphological characteristics of nanopowders on La^{3+} content and synthesis conditions is investigated by the Raman spectroscopy. Very intensive modes observed in the Raman spectra of all nanopowder samples are assigned to anatase...
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