| Issue |
Europhys. Lett.
Volume 67, Number 3, August 2004
|
|
|---|---|---|
| Page(s) | 460 - 463 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2004-10073-1 | |
| Published online | 01 July 2004 | |
The role of cluster dynamics in the α-relaxation of supercooled liquids
Department of Physics, Bar-Ilan University - Ramat-Gan, 52900, Israel
Corresponding author: halpeh@mail.biu.ac.il
Received:
19
March
2004
Accepted:
17
May
2004
The effect is considered of molecules leaving a cluster, within
which their dielectric α-relaxation is described by a
stretched exponential function
![$p(t)=\exp[-(t/\tau_{0})^{\alpha}]$](/articles/epl/abs/2004/15/epl8270/epl8270_tex_eq1.png)
. It is shown that an increase
in their rate of leaving can lead to the relaxation of the
system's polarization being described by a stretched exponential
function with a stretching exponent larger than α and a
relaxation time smaller than 
. The implications of this
for time-temperature superposition and other properties of
supercooled liquids are discussed.
PACS: 77.22.Gm – Dielectric loss and relaxation
© EDP Sciences, 2004
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