Acoustic properties of a porous glass (vycor) at hypersonic frequencies

Brillouin scattering experiments have been performed from 5 to 1600 K in vycor, a porous silica glass. The acoustic velocity and attenuation at hypersonic frequencies are compared to those of bulk silica and others porous silica samples. The experimental evidence for the influence of porosity on the...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2007-10, Vol.19 (41), p.416110-416110
Main Authors: Levelut, C, Pelous, J
Format: Article
Language:English
Subjects:
Acoustical properties of solids
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Mechanical and acoustical properties of condensed matter
Physics
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Summary:Brillouin scattering experiments have been performed from 5 to 1600 K in vycor, a porous silica glass. The acoustic velocity and attenuation at hypersonic frequencies are compared to those of bulk silica and others porous silica samples. The experimental evidence for the influence of porosity on the scattering by acoustic waves is compared to calculations. The correlation between internal friction and thermal conductivity at low temperature is discussed.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/19/41/416110