✦ LIBER ✦

An experimentally consistent atomistic structural model of silica glass

✍ Scribed by D.T. Bowron

Publisher: Elsevier Science
Year: 2008
Tongue: English
Weight: 649 KB
Volume: 149
Category: Article
ISSN: 0921-5107
DOI: 10.1016/j.mseb.2007.11.030

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✦ Synopsis

Empirical potential structure refinement is used to build an atomistic model of silica glass based on neutron scattering data. This model is tested against X-ray diffraction and extended X-ray absorption fine structure (EXAFS) spectroscopy data to establish its local and intermediate range structural veracity. The chemical specificity of the silicon and oxygen K-edge spectroscopic information allows us to confirm that the neutron scattering derived model represents a reasonable representation of the three partial structure factors that are required to characterise this binary glass and subsequently give confidence in the Faber-Ziman and Bhatia-Thornton partial structure factors and pair distribution functions that are extracted from the model.

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