Abstract
We report the first ever photon correlation spectroscopy performed on single alkali and mixed alkali metaphosphate glasses at refractory temperatures above the glass transition. We find not only a significant decrease in the glass transition temperature but also a decrease in fragility for the mixed alkali composition as compared with the single akali glasses. We argue that structural relaxation in these polymeric oxide glasses is largely controlled by the cross linking cations and that the changes in fragility that we observed are a reflection of changes in the cooperativity of structural relaxation wrought by the substantial decrease in the ion mobility that accompanies the mixing of alkali ions.
| Original language | English |
|---|---|
| Article number | 024502 |
| Journal | Journal of Chemical Physics |
| Volume | 125 |
| Issue number | 2 |
| DOIs | |
| State | Published - 2006 |
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All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
Cite this
Dynamic light scattering in mixed alkali metaphosphate glass forming liquids. / Rodenburg, B. V.; Sidebottom, David L.
In: Journal of Chemical Physics, Vol. 125, No. 2, 024502, 2006.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Dynamic light scattering in mixed alkali metaphosphate glass forming liquids
AU - Rodenburg, B. V.
AU - Sidebottom, David L.
PY - 2006
Y1 - 2006
N2 - We report the first ever photon correlation spectroscopy performed on single alkali and mixed alkali metaphosphate glasses at refractory temperatures above the glass transition. We find not only a significant decrease in the glass transition temperature but also a decrease in fragility for the mixed alkali composition as compared with the single akali glasses. We argue that structural relaxation in these polymeric oxide glasses is largely controlled by the cross linking cations and that the changes in fragility that we observed are a reflection of changes in the cooperativity of structural relaxation wrought by the substantial decrease in the ion mobility that accompanies the mixing of alkali ions.
AB - We report the first ever photon correlation spectroscopy performed on single alkali and mixed alkali metaphosphate glasses at refractory temperatures above the glass transition. We find not only a significant decrease in the glass transition temperature but also a decrease in fragility for the mixed alkali composition as compared with the single akali glasses. We argue that structural relaxation in these polymeric oxide glasses is largely controlled by the cross linking cations and that the changes in fragility that we observed are a reflection of changes in the cooperativity of structural relaxation wrought by the substantial decrease in the ion mobility that accompanies the mixing of alkali ions.
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U2 - 10.1063/1.2210936
DO - 10.1063/1.2210936
M3 - Article
AN - SCOPUS:33746216414
VL - 125
JO - Journal of Chemical Physics
JF - Journal of Chemical Physics
SN - 0021-9606
IS - 2
M1 - 024502
ER -