We report new inelastic Raman and neutron scattering spectra for glasses with different degrees of fragility, v- SiO2, v- GeO2, (AgI)(0.5) (Ag2O-B2O3)(0.5), (AgI)(x)(AgPO3)(1-x). The data are compared for each sample to obtain the Raman coupling function C(omega). The study indicates a general linear behaviour of C(omega) near the boson peak maximum, and evidences a correlation between vibrational and relaxational properties, confirming the results of recent publications.
The Raman coupling function in disordered solids: a light and neutron scattering study on glasses of different fragility
Fontana, Aldo;Rossi, Flavio;Viliani, Gabriele;Caponi, Silvia;Baldi, Giacomo;Dal Maschio, Roberto
2007-01-01
Abstract
We report new inelastic Raman and neutron scattering spectra for glasses with different degrees of fragility, v- SiO2, v- GeO2, (AgI)(0.5) (Ag2O-B2O3)(0.5), (AgI)(x)(AgPO3)(1-x). The data are compared for each sample to obtain the Raman coupling function C(omega). The study indicates a general linear behaviour of C(omega) near the boson peak maximum, and evidences a correlation between vibrational and relaxational properties, confirming the results of recent publications.File in questo prodotto:
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