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arXiv · 1704.08044

A remark on the negative activation volume for defects in solids

Vassiliki Katsika-Tsigourakou
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Abstract

The evolution of the aging process of glassy materials quenched from temperatures above their glass transition temperature $T_g$, when plotting the relaxed enthalpy versus the decrease in volume, leads to a slope comparable to the isothermal compressibility close to $T_g$. This empirical result was explained in an earlier publication (V. Katsika-Tsigourakou, G. E. Zardas J. Non-Cryst. Solids 356 (2010) 179-180) by means of a thermodynamical model. Here, we show that the same model enables the explanation of the rare cases of negative defect activation in solids.

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Vassiliki Katsika-Tsigourakou. 2017-04-26. A remark on the negative activation volume for defects in solids. https://arxiv.org/abs/1704.08044

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