Atomic structure of As(25)Si(40)Te(35) glass

I Kaban, S Gruner, P Jóvári, M Kehr, W Hoyer, R G Delaplane, M Popescu
Journal of Physics. Condensed Matter: An Institute of Physics Journal 2007 August 22, 19 (33): 335210
Glassy As(25)Si(40)Te(35) has been studied by x-ray and neutron diffraction as well as x-ray absorption spectroscopy (EXAFS) at As and Te K-edges. Simultaneous modelling of the four independent measurements by means of the reverse Monte Carlo (RMC) simulation technique allowed the separation of partial pair distribution functions and estimation of the corresponding coordination numbers. It is shown that the atomic structure of As(25)Si(40)Te(35) glass can be presented as a three-dimensional network of twofold coordinated Te, threefold coordinated As and fourfold coordinated Si atoms.

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