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Raman spectra of GexAsySe1−x−y glasses

Wang, R. P.; Smith, A.; Prasad, A.; Choi, Duk-Yong; Luther-Davies, B.


Various Ge–As–Se glasses spanning a mean coordination number (MCN) from 2.2 to 2.94 have been investigated using differential scanning calorimetry and Raman spectroscopy. The glass transition temperature Tg was found to increase with increasing MCN, except for those glasses located within the nanoscale phase-separated region of the phase diagram. The evolution of Raman features at wavenumbers from 150 to 350 cm⁻¹ exhibits two transitionlike features. Merging of the 225 and 250 cm⁻¹ modes at...[Show more]

CollectionsANU Research Publications
Date published: 2009-08-26
Type: Journal article
Source: Journal of Applied Physics
DOI: 10.1063/1.3204951


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