Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7899549 | Journal of Non-Crystalline Solids | 2018 | 8 Pages |
Abstract
To understand the unique features of germanium sulfide (~60-70â¯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.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
R. Golovchak, V. Nazabal, B. Bureau, J. Oelgoetz, A. Kovalskiy, H. Jain,