Article ID Journal Published Year Pages File Type
7899549 Journal of Non-Crystalline Solids 2018 8 Pages PDF
Abstract
To understand the unique features of germanium sulfide (~60-70 at.% of S) glasses modified with Ga or Sb, the chemical order in these materials is investigated using X-ray photoelectron spectroscopy (XPS). The obtained results are correlated with Raman spectroscopy data and verified with quantum chemical calculations. It is shown that in addition to the regular corner-shared and SS-shared [SbS3/2] pyramids and [GeS4/2] tetrahedra, a fraction of these structural units can form edge-shared fragments. The obtained XPS results also support the possibility for [SbS5/2] distorted square pyramids formation in Sb-rich glasses. At higher concentrations of antimony, a tendency to the increased concentration of homopolar bonds is observed.
Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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