New Raman and neutron scattering data on (AgI)x(AgPO3)1-x at various temperatures and Agi concentrations (0.0 < x < 0.55) are compared to obtain the Raman coupling function C(ω) and, in particular, its low-frequency limit. This study indicates a strong variation in the dynamics with increasing AgI content. Moreover the direct comparison of the Raman and neutron scattering data indicates that, in the ω ↪ 0 limit, C(ω) extrapolates to a non-vanishing value, giving interesting indications on the nature of the vibrational modes in disordered systems.
Dynamics of silver phosphate glasses by light and neutron scattering measurements
D'ANGELO, Giovanna;
2002-01-01
Abstract
New Raman and neutron scattering data on (AgI)x(AgPO3)1-x at various temperatures and Agi concentrations (0.0 < x < 0.55) are compared to obtain the Raman coupling function C(ω) and, in particular, its low-frequency limit. This study indicates a strong variation in the dynamics with increasing AgI content. Moreover the direct comparison of the Raman and neutron scattering data indicates that, in the ω ↪ 0 limit, C(ω) extrapolates to a non-vanishing value, giving interesting indications on the nature of the vibrational modes in disordered systems.File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
