Abstract
The local vibrational modes and the microscopic nature of Te sites in GeSe2-xTex alloy glasses have been examined using Raman and129I Mossbauer emission spectroscopy. Two distinct types (A, B) of chalcogen (Te) sites are observed. The Mossbauer site intensities IB/IA(x) reveal a power-law variation which on statistical grounds requires that these sites be formed in a cluster. The characteristic size of the cluster is found to be 60–75 A.
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