Article ID Journal Published Year Pages File Type
1483612 Journal of Non-Crystalline Solids 2007 5 Pages PDF
Abstract

From Dy L3-edge extended X-ray absorption fine structure spectroscopic analysis of Dy-doped Ge–As–S glass, we verified that both the coordination number and Dy–S distance are decreased in this representative chalcogenide glass compared to those in the Dy2S3 crystalline counterpart. The strong covalent nature inherent in chemical bonds between the constituent atoms of Ge–As–S glass would be responsible for the enhanced covalency of the Dy–S bonds, which would then be sensitively related to the optical characteristics of the 4f ↔ 4f transitions of Dy3+ as well as the low rare-earth solubility exhibited by the Ge–As–S glass.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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