Sound wave scattering in network glasses.
Phys Rev Lett
; 86(17): 3803-6, 2001 Apr 23.
Article
en En
| MEDLINE
| ID: mdl-11329328
The acoustic branch of two network glasses, (Li2O)xB2O3 ( x = 0.25 and 0.5), is followed over a large momentum transfer range 1-12 nm(-1), using inelastic x-ray scattering. We observe the transition from propagating modes to a region of strong scattering as the Ioffe-Regel limit is reached. A region of Rayleigh scattering of the acoustic modes precedes the strong scattering regime at larger Q, causing a rapid decrease of the mean-free path of the modes.
Buscar en Google
Bases de datos:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Año:
2001
Tipo del documento:
Article
País de afiliación:
Suecia