Physics – Condensed Matter – Materials Science
Scientific paper
2009-03-15
APPLIED PHYSICS LETTERS 94, 101901 (2009)
Physics
Condensed Matter
Materials Science
Scientific paper
10.1063/1.3095849
Near-bandgap Raman scattering was used to induce and study photostructural changes in AsxS100-x bulk glasses revealing a new photoinduced polymerization effect. Raman spectra were recorded also in off-resonant conditions allowing for a detailed comparison between the equilibrium glass structure and the metastable one induced by illumination. It is shown that in S-rich glasses structural changes involve the athermal scission of S8 rings and their polymerization to Sn chains. The fraction of bonds involved in this effect is surprisingly high, being one order of magnitude higher than the corresponding fractions reported up to now in photostructural studies in chalcogenide glasses.
Kyriazis F.
Yannopoulos Spyros N.
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