Origin of the frequency shift of Raman scattering in chalcogenide glasses
Origin of the frequency shift of Raman scattering in chalcogenide glasses
复制标题
硫属化物玻璃中拉曼散射频移的起源
DOI：
10.1016/j.jnoncrysol.2014.03.021
复制
发表时间：
2014-05
影响因子：
3.5
通讯作者：
Yue, Yuanzheng
中科院分区：
文献类型：
--
作者：
Han, Xuecai;Tao, Haizheng;Gong, Lunjun;Wang, Xueye;Zhao, Xiujian;Yue, Yuanzheng
拉曼散射是探测玻璃，特别是共价玻璃结构演化的一种灵敏方法。通常，对于Gesingle键Se硫系玻璃，主拉曼散射频率会随着成分的变化而移动。然而，这种变化的依赖性是否以及如何与全球网络的拓扑连通性和/或结构单元(例如四面体GeSe4)的局部环境相关联还没有很好的确定。本文给出了Ge(SxSe_1·−_x)_2玻璃中主拉曼散射频率的成分演化，并阐明了其结构来源。我们在所研究的玻璃系列中保持拓扑约束数不变，以探索中程结构对主拉曼散射频率的影响。结果表明，频移是由于GeS4四面体等中心结构单元的近邻连通性发生变化所致。通过对正常拉曼模式的从头计算，结合群论分析，揭示了不同组成硫系玻璃的结构演化过程。
Raman scattering is a sensitive method for probing the structural evolution in glasses, especially in covalent ones. Usually the main Raman scattering frequency shifts with composition for Gesingle bondSe chalcogenide glasses. However, it has not been well established whether and how the dependence of the shift is associated with the topological connectivity of global network and/or the local environment of structural units, (e.g., tetrahedral GeSe4). Here we show the compositional evolution of the main Raman scattering frequency in Ge(SxSe1 − x)2glasses, and then clarify its structural origin. We keep the number of topological constraints constant in the studied glass series, in order to explore the impact of mediate range structure on the main Raman scattering frequency. The results reveal that the frequency shift is attributed to the alteration of the nearest neighbor connectivity of central structural units such as GeS4tetrahedra. Theab-initiocalculations of normal Raman mode combined with group theory analysis provide insight into the structural evolution of chalcogenide glasses with varying composition.
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影响因子：
3.7
作者：
GALEENER, FL
通讯作者：
GALEENER, FL
DOI：
10.1002/pssc.200982810
发表时间：
2010-04
期刊：
Physica Status Solidi (c)
影响因子：
--
作者：
O. Shpotyuk;R. Golovchak;V. Boyko;S. Kozyukhin
通讯作者：
O. Shpotyuk;R. Golovchak;V. Boyko;S. Kozyukhin
影响因子：
3.7
作者：
SEN, PN;THORPE, MF
通讯作者：
THORPE, MF
影响因子：
3.5
作者：
O. Shpotyuk;R. Golovchak;V. Boyko;M. Hyla
通讯作者：
O. Shpotyuk;R. Golovchak;V. Boyko;M. Hyla
DOI：
10.1016/j.msea.2005.12.101
发表时间：
2007-03
影响因子：
6.4
作者：
Y. Murakami;T. Usuki;M. Sakurai;S. Kohara
通讯作者：
Y. Murakami;T. Usuki;M. Sakurai;S. Kohara