Atomic-scale structure of GeSe₂ glass revisited: a continuous or broken network of Ge-(Se_1/2)₄ tetrahedra?

Journal Article · Fri Oct 22 00:00:00 EDT 2010 · J. Phys. Condens. Matter

DOI:https://doi.org/10.1088/0953-8984/22/11/115402· OSTI ID:1002564

Petkov, V; Le Messurier, D ^[1]

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1. CMU

The atomic-scale structure of germanium diselenide (GeSe₂) glass has been revisited using a combination of high-energy x-ray diffraction and constrained reverse Monte Carlo simulations. The study shows that the glass structure may be very well described in terms of a continuous network of corner- and edge-sharing Ge–Se₄ tetrahedra. The result is in contrast to other recent studies asserting that the chemical order and, hence, network integrity in GeSe₂ glass are intrinsically broken. It is suggested that more elaborate studies are necessary to resolve the controversy.

• Research Organization: Advanced Photon Source (APS), Argonne National Laboratory (ANL), Argonne, IL (US)
• Sponsoring Organization: USDOE
• OSTI ID: 1002564
• Journal Information: J. Phys. Condens. Matter, Journal Name: J. Phys. Condens. Matter Journal Issue: (11) ; 2010 Vol. 22
• Country of Publication: United States
• Language: ENGLISH