期刊
SCIENCE OF SINTERING
卷 41, 期 1, 页码 67-73出版社
INT INST SCIENCE SINTERING (I I S S)
DOI: 10.2298/SOS0901067S
关键词
Anatase TiO2 nanopowder; Raman spectroscopy
资金
- MSRS [141047, OPSA-026283]
Raman spectroscopy has been used for characterization of commercial nanosized TiO2 powder with declared grain size of 5 nm. The Raman spectra measured in Stokes and anti-Stokes regime confirm the anatase phase of DO, powder in temperature range 25-1173 K. It is shown that phonon-confinement (due to small grain size) and nonstoichiometry (caused by laser irradiation in vacuum) have a great influence on blueshifit and broadening of the main E-g Raman mode at low temperatures, while the influence of the strong anharmonic effect becomes dominant at higher temperatures. The phonon confinement effect decreases due to the crystallite growth at temperatures above 673 K.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据