Entropy and dynamic properties of water below the homogeneous nucleation temperature

Details Entropy and dynamic properties of water below the homogeneous nucleation temperature Entropy and dynamic properties of water below the homogeneous nucleation temperature

1999-03-31

arxiv.org/abs/cond-mat/9903451v3

Physics

Condensed Matter

Scientific paper

Controversy exists regarding the possible existence of a transition between the liquid and glassy states of water. Here we use experimental measurements of the entropy, specific heat, and enthalpy of both liquid and glassy water to construct thermodynamically-plausible forms of the entropy in the difficult-to-probe region between 150 K and 236 K. We assume there is no discontinuity in the entropy of the liquid in this temperature range, and use the Adam-Gibbs theory -- which relates configurational entropy to dynamic behavior -- to predict that dynamic quantities such as the diffusion constant and the viscosity pass through an inflection where the liquid behavior changes from that of an extremely ``fragile'' liquid to that of a ``strong'' liquid.

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