Size Effect in Raman Spectra of Hydrous Zirconia Particles

摘要: The Raman spectra of hydrous zirconia particles prepared by hydrolysis ZrOCl2 were measured. number Roman bands and the shift observed for as-prepared are similar to those monoclinic crystalline ZrO2 except width measured broad. Using high resolution TEM, it was that consist highly crystallized primary 30A in diameter. These experimental facts indicated broadness resulted from breakdown K-momentum conservation small size particles. heated up 900°C became narrower with increasing temperature. TEM observations also showed heat-treated increased Therefore, narrowing is considered as a result increase particle silicon. relationship between band experimentally established.