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arXiv 1102.5507cond-mat.mtrl-sci
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GexAsySe100-x-y玻璃的拉曼光谱

Raman spectra of GexAsySe100-x-y glasses

S. Gapochenko, V. Belozertseva, H. Khlyap, A. Mamalui

摘要:

本文研究了GexAsySe_(100)-x-y(0 < x < 30; 10 < y < 40)玻璃的室温喇曼光谱。三组样品进行了调查,它被发现,他们是定性不同的形状,他们的光谱。提出了每一套眼镜的结构模型。可以使用形式参数-平均配位数(每个原子的平均共价键数)来选择具有相同结构类型的组上的玻璃<m>:i)2.1 &lt;<m>&lt; 2.51(聚合物结构); ii)2.51 &lt;<m>&lt; 2.78(分子簇结构); iii)2.78 &lt;<m>&lt; 3(网络结构)。

英文摘要:

Raman spectra of GexAsySe100-x-y (0 < x < 30; 10 < y < 40) glasses have been studied at room temperature. Three sets of samples were investigated; it was revealed that they are qualitatively differing by shape of their spectra. The structure model was proposed for glasses of each set. The selection of the glasses on the sets with the same structure type can be made using the formal parameter - the mean coordination number <m> (the mean number of covalent bonds per atom): i) 2.1 < <m> < 2.51 (polymeric structure); ii) 2.51 < <m> < 2.78 (molecular-cluster structure); iii) 2.78 < <m> < 3 (network structure).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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