Structural investigations of Ge(5)As(x)Se(95-x) and Ge(15)As(x)Se(85-x) glasses using x-ray diffraction and extended x-ray fine structure spectroscopy |
| |
Authors: | I Kaban P Jóvári R-P Wang B Luther-Davies N Mattern J Eckert |
| |
Institution: | IFW Dresden, Institute for Complex Materials, PO Box 270116, D-01171 Dresden, Germany. |
| |
Abstract: | The structure of Ge(5)As(x)Se(95-x) (x?=?10, 20, 30, 38?at.%) and Ge(15)As(x)Se(85-x) (x?=?10, 25, 34?at.%) glasses has been investigated by high-energy x-ray diffraction and extended x-ray absorption fine structure measurements. The experimental datasets have been modelled using the reverse Monte Carlo simulation technique. The model atomic configurations have been analysed in detail. It has been found that the homonuclear Ge-Ge, As-As, Se-Se and heteronuclear Ge-As bonds play an important role in the structure formation of the Ge-As-Se glasses. The total number of these bonds decreases quite slowly with the mean coordination number similarly to the nonlinear refractive index. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|