Abstract
A Raman scattering study of low-frequency vibrational spectra of mixed cadmium sulfoselenide nanocrystals in a fluorophosphate glassy matrix is reported. The measurements have revealed a low-frequency feature in the nanocrystal density of states, whose frequency is related to the glass-matrix annealing time and, hence, to the size of the nanocrystals prepared, which is interpreted as a manifestation of the size quantization effect. Besides the line associated with the constraints on the longitudinal acoustic wave in a nanocrystal, a lower-frequency feature assigned to torsional vibrations of a nonspherical nanocrystal has been found.
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Fiz. Tverd. Tela (St. Petersburg) 41, 1306–1309 (July 1999)
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Denisov, E.P., Karpov, S.V., Kolobkova, E.V. et al. Specific features in low-frequency vibrations of nanocrystals in fluorophosphate glassy matrices. Phys. Solid State 41, 1194–1197 (1999). https://doi.org/10.1134/1.1130964
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DOI: https://doi.org/10.1134/1.1130964