Determination of As <scp>SI</scp> ‐Sb <scp>SI</scp> glasses short‐range structure via Raman spectroscopy, <scp>XPS</scp> and <scp>XRD</scp>

Abstract

Abstract The ability to predict the influence of dopants (such as antimony) on the short‐range structure of As‐S‐I glasses has the potential to help design glasses with modified properties. In the present work, the short‐range structure of As‐Sb‐S‐I glasses has been investigated along As SI ‐Sb SI section of fixed sulfur and iodine concentrations and equivalent arsenic by antimony substitution. At high arsenic content (As:Sb≥2:1) antimony substitutes arsenic in AsI 3 molecules justified by Raman spectroscopy and XPS . Further antimony introduction (As:Sb&lt;2:1) leads to the substitution of arsenic by antimony in ‐S‐As‐S‐ polymeric chains, leading to Sb SI crystallization justified by XRD . The resulting two‐dimensional schematic diagrams represent the As SI ‐Sb SI glasses short‐range structure and show the mechanism of arsenic by antimony substitution.