| Issue |
Europhys. Lett.
Volume 65, Number 2, January 2004
|
|
|---|---|---|
| Page(s) | 221 - 227 | |
| Section | Condensed matter: structure, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i2003-10068-4 | |
| Published online | 01 January 2004 | |
Scaling frequency in the critical sound attenuation of binary liquids
Drittes Physikalisches Institut, Georg-August-Universität Bürgerstrasse 42-44, 37073 Göttingen, Germany
Received:
15
July
2003
Accepted:
6
November
2003
For the ethanol-dodecane and methanol-cyclohexane mixtures of
critical composition ultrasonic attenuation, shear viscosity, and
dynamic light scattering data are evaluated to yield the scaled
half-attenuation frequency 
of the
Bhattacharjee-Ferrell dynamic scaling model as well as the
Folk-Moser and the Onuki scaling functions. Within the limits of
experimental error, the experimental half-attenuation frequency
values for the former model (
)
agree with the theoretical prediction. The values
derived for the Folk-Moser and the Onuki scaling functions
exhibit systematic deviations from the theoretical values
and 
. The
results show that, at least for systems without crossover to
elementary chemical reactions, the frequency scale in the dynamic
scaling model, which had been obtained by including a special
hydrodynamic effect, is in accord with experimental evidence.
PACS: 68.35.Rh – Phase transitions and critical phenomena / 62.60.+v – Acoustical properties of liquids
© EDP Sciences, 2004
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