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首页> 外文期刊>Applied Surface Science >The application of Raman and anti-stokes Raman spectroscopy for in situ monitoring of structural changes in laser irradiated titanium dioxide materials
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The application of Raman and anti-stokes Raman spectroscopy for in situ monitoring of structural changes in laser irradiated titanium dioxide materials

机译：拉曼和抗焦炭拉曼光谱在原位监测激光辐照二氧化钛材料结构变化中的应用

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The use of Raman and anti-stokes Raman spectroscopy to investigate the effect of exposure to high power laser radiation on the crystalline phases of TiO2, has been investigated. Measurement of the changes, over several time integrals, in the Raman and the anti-strokes Raman of TiO2 spectra with exposure to laser radiation is reported. Raman and anti-stokes Raman provide detail on both the structure and the kinetic process of changes in crystalline phases in the titania material. The effect of laser exposure resulted in the generation of increasing amounts of the rutile crystalline phase from the anatase crystalline phase during exposure. The Raman spectra displayed bands at 144 cm(-1) (Alg), 197 cm(-1) (Eg), 398 cm(-1) (Blg), 515 cm(-1) (Alg), and 640 cm(-1) (Eg) assigned to anatase which were replaced by bands at 143 cm(-1) (Blg), 235 cm(-1) (2 phonon process), 448 cm(-1) (Eg) and 612 cm(-1) (Alg) which were assigned to rutile. This indicated that laser irradiation of TiO2 changes the crystalline phase from anatase to rutile. Raman and anti-stokes Raman are highly sensitive to the crystalline forms of TiO2, and allow characterisation of the effect of laser irradiation upon TiO2. This technique would also be applicable as an in situ method for monitoring changes during the laser irradiation process. (c) 2005 Elsevier B.V. All rights reserved.
机译：已经研究了使用拉曼和抗焦炭拉曼光谱研究高功率激光辐射对TiO2结晶相的影响。报道了在暴露于激光辐射下的TiO 2光谱的拉曼和抗笔画拉曼中在几个时间积分上的变化的测量结果。拉曼和反焦炭拉曼详细介绍了二氧化钛材料中结晶相变化的结构和动力学过程。激光曝光的效果导致在曝光过程中锐钛矿晶相产生的金红石晶相数量增加。拉曼光谱显示144 cm（-1）（Alg），197 cm（-1）（Eg），398 cm（-1）（Blg），515 cm（-1）（Alg）和640 cm（ -1）（Eg）分配给锐钛矿，被143 cm（-1）（Blg），235 cm（-1）（2声子过程），448 cm（-1）（Eg）和612 cm（ -1）（Alg）分配给金红石。这表明二氧​​化钛的激光辐照将晶相从锐钛矿变为金红石。拉曼和防焦拉曼对TiO2的晶体形式高度敏感，并可以表征TiO2上的激光辐照效果。该技术还可以用作监测激光辐照过程中变化的原位方法。 （c）2005 Elsevier B.V.保留所有权利。

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