BAND LIMITS AND THE VIBRATIONAL-SPECTRA OF TETRAHEDRAL GLASSES
BAND LIMITS AND THE VIBRATIONAL-SPECTRA OF TETRAHEDRAL GLASSES
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DOI：
10.1103/physrevb.19.4292
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发表时间：
1979-01-01
影响因子：
3.7
通讯作者：
GALEENER, FL
中科院分区：
文献类型：
--
作者：
GALEENER, FL
A X 2四面体玻璃的拉曼和红外光谱的主要特征与Sen和Thorpe计算的振动带边缘有关。主要的拉曼峰被分配到一个奇异的矩阵元素，而不是在振动态密度的峰。简单的表达式开发，产生有用的值的振动力常数和四面体间角的玻璃SiO2，GeO2，和BeF2。
The primary features of the Raman and infrared spectra of A X 2 tetrahedral glasses are associated with the edges of the vibrational bands calculated by Sen and Thorpe. The dominant Raman peak is assigned to a singular matrix element rather than a peak in the density of vibrational states. Simple expressions are developed which yield useful values of the vibrational force constants and intertetrahedral angles for vitreous Si O 2, Ge O 2, and Be F 2.