Chemical order in Ga or Sb modified germanium sulfide glasses around stoichiometry: High-resolution XPS and Raman studies

被引：15

作者：

Golovchak, R. ^{[1
]}

Nazabal, V ^{[2
]}

Bureau, B. ^{[2
]}

Oelgoetz, J. ^{[1
]}

Kovalskiy, A. ^{[1
]}

Jain, H. ^{[3
]}

机构：

[1] Austin Peay State Univ, Dept Phys Engn & Astron, Clarksville, TN 37044 USA

[2] Univ Rennes 1, UMR CNRS 6226, Equipe Verres & Ceram, F-35042 Rennes, France

[3] Lehigh Univ, Dept Mat Sci & Engn, 5 East Packer Ave, Bethlehem, PA 18015 USA

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2018年 / 499卷

基金：

美国国家科学基金会;

关键词：

Chalcogenide glass; Electronic and atomic structure; XPS; SPECTROSCOPY; EXCHANGE; SPECTRA; NMR;

D O I：

10.1016/j.jnoncrysol.2018.07.040

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

To understand the unique features of germanium sulfide (similar to 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 S-S-shared [SbE3/2] 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.

引用

页码：237 / 244

页数：8

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