Correlating structure with non-linear optical properties in xAs40Se60 x (1 ? x)As40S60 glasses

Barney, Emma R.; Abdel-Moneim, Nabil S.; Towey, James J.; Titman, Jeremy; McCarthy, John E.; Bookey, Henry T.; Kar, Ajoy; Furniss, David; Seddon, Angela B.

Abstract

A series of xAs40Se60·(100 − x)As40S60 glasses, where x = 0, 25, 33, 50, 67, 75 and 100 mol% As40Se60, has been studied using neutron and X-ray total scattering, Raman spectroscopy and 77Se MAS-NMR. The results are presented with measurements of non-linear refractive indices, n2, and densities. There is no evidence for the formation of homopolar bonds in these glasses, but neutron correlation functions suggest that there is a non-random distribution of sulfur and selenium atoms in sulfur-rich glasses. The average number of sulfur atoms at a distance of 3–4 Å from a selenium atom, nSeS, deviates from a linear variation with x in glasses containing

• Journal Article Type: Article
• Acceptance Date: Jan 22, 2015
• Online Publication Date: Jan 23, 2015
• Publication Date: Mar 7, 2015
• Deposit Date: Sep 13, 2018
• Publicly Available Date: Feb 7, 2019
• Print ISSN: 1463-9076
• Publisher: Royal Society of Chemistry
• Peer Reviewed: Peer Reviewed
• Volume: 17
• Issue: 9
• Pages: 6314-6327
• DOI: https://doi.org/10.1039/c4cp05599c
• Public URL: https://nottingham-repository.worktribe.com/output/1102441
• Publisher URL: https://pubs.rsc.org/en/Content/ArticleLanding/2015/CP/C4CP05599C#!divAbstract