TY - JOUR
T1 - `Strong' and `superstrong' liquids, and an approach to the perfect glass state via phase transition
AU - Angell, Charles
AU - Moynihan, C. T.
AU - Hemmati, M.
N1 - Funding Information:
This work was performed under the auspices of the NSF, Solid State Chemistry Grant No. DMR9614531.
PY - 2000/9
Y1 - 2000/9
N2 - When the excitations described by the `bond lattice' model, and its `defect' model relatives, are allowed to interact, this simple class of model predicts the possibility of first-order transitions between viscous and fluid liquid states. Looking for support of this prediction, the behavior of a series of `tetrahedral' liquids, all of which are famous for one or another aspect of their behavior, was examined. It is shown that when diffusivity data for these liquids, SiO2, BeF2, water, and liquid Si, are plotted on a reduced temperature scale with glass transition temperature as the scaling temperature, a systematic pattern is revealed in which a mild deviation, in the case of BeF2, from the `strong' extreme of the normal strong/fragile glass-former pattern.
AB - When the excitations described by the `bond lattice' model, and its `defect' model relatives, are allowed to interact, this simple class of model predicts the possibility of first-order transitions between viscous and fluid liquid states. Looking for support of this prediction, the behavior of a series of `tetrahedral' liquids, all of which are famous for one or another aspect of their behavior, was examined. It is shown that when diffusivity data for these liquids, SiO2, BeF2, water, and liquid Si, are plotted on a reduced temperature scale with glass transition temperature as the scaling temperature, a systematic pattern is revealed in which a mild deviation, in the case of BeF2, from the `strong' extreme of the normal strong/fragile glass-former pattern.
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U2 - 10.1016/S0022-3093(00)00222-2
DO - 10.1016/S0022-3093(00)00222-2
M3 - Article
AN - SCOPUS:0034272901
VL - 274
SP - 319
EP - 331
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
SN - 0022-3093
IS - 1
ER -