Influence of small additives of germanium on the physical properties of chalcogenide glasses based on composition As30.5S44.5I25

Abstract

Abstract Advanced for the infrared region of the spectrum chalcogenide glass composition As30.5S44.5I25 with small germanium additives were investigated. The concentration dependences of some physical and chemical properties indicate an increase in the performance of glasses due to the modification of the glass network. The character of the change in the short-wavelength absorption edge with an increase in the content of germanium atoms had an exponential character, shifting from 597 to 582 nm. A non-monotonic dependences were also found for the values of density, refractive index, and glass transition temperature. A joint analysis of the results obtained and structural studies described in the literature for similar glass systems made it possible to propose possible structural groups of glass compositions under investigation.