Publication detail

Effect of silver doping on the structure and phase separation of sulfur-rich As-S glasses: Raman and SEM studies

Year: 2009

Type of publication: článek v odborném periodiku

Name of source: Journal of Non-Crystalline Solids

Publisher name: Elsevier Science BV

Place: Amsterdam

Page from-to: 2010-2014

Titles:

Language	Name	Abstract	Keywords
cze
eng	Effect of silver doping on the structure and phase separation of sulfur-rich As-S glasses: Raman and SEM studies	We report on the structural details and microphase separation of the bulk glasses Ag-x center dot (AS(33)S(67))(100-x) for 0<=x<=25. Class-glass phase separation occurs over a wide range of Ag content, 4<=x<=20. An off-resonant polarized Raman spectroscopic study has been carried out to elucidate structural aspects at the short- and medium-range structural order of the glasses. Analysis of Raman spectra revealed quantitative changes of the sulfur-rich microenvironments that reduce upon adding Ag. Scanning electron microscopy combined with X-rays microanalysis have been utilized to examine the type and extent of phase separation, and to provide quantitative details on the atomic concentrations in the Ag-poor and Ag-rich phases.	Raman scattering;Fast ion conduction;Chalcogenides;Scanning electron microscopy;Phases and equilibria;Medium-range order;Short-range order;Calorimetry;Glass transition

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