Brillouin and Raman scattering measurements on (AgI)x(AgPO3)1-x glasses are compared with low-temperature specific heat measurements. The direct comparison of the Brillouin shift and the freauency of the boson peak maximum shows that these features have the same qualitative behaviours. In fact, a shift towards Iow freauency is observed with increasing Agi content from x = 0 to x = 0.55, indicating a close relationship between Brillouin scattering (acoustic modes) and the boson peak. Correspondingly we have observed a shift to a lower temperature of the maximum Cp/T3

Low-temperature optical and thermal properties of AgI-based phosphate glasses

D'ANGELO, Giovanna;TRIPODO, Gaspare;
1999

Abstract

Brillouin and Raman scattering measurements on (AgI)x(AgPO3)1-x glasses are compared with low-temperature specific heat measurements. The direct comparison of the Brillouin shift and the freauency of the boson peak maximum shows that these features have the same qualitative behaviours. In fact, a shift towards Iow freauency is observed with increasing Agi content from x = 0 to x = 0.55, indicating a close relationship between Brillouin scattering (acoustic modes) and the boson peak. Correspondingly we have observed a shift to a lower temperature of the maximum Cp/T3
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11570/1586717
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