Prediction of the metal-non-metal transition using the linear isotherm regularity

Article Abstract:

The linear isotherm regularity (LIR), a thermodynamic equation of state, was used to predict the metal-non-metal transition that occur when density decreases. Results revealed several changes in liquid structure while the transition is occurring, indicating a deviation from the linearity predicted by the LIR. An appropriate equation of state was then derived and used to predict a transition for liquids CS, Rb, Na and Hg. The predictions were found to agree well with experimental results. The transition was also observed to be neither first order nor second order.

Cesium, Sodium, Sodium (Chemical element), Mercury, Mercury (Metal), Rubidium, Liquid metals

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Interrelation between different mixed cation effects in the electrical conductivity and mechanical loss spectra of ion conducting glasses

Article Abstract:

A study on mixed alkali glasses with a given overall alkali content compares the electrical conductivity and mechanical loss spectra of several mixed alkali and mixed alkali-alkaline earth glasses. A correlation was found between the difference of the activation energies of the faster and the slower ion transport process and the mixed cation effects in mechanical loss peak height as well as in the frequency response of electrical conductivity.

Case studies, Electrical conductivity, Silicates, Amorphous substances, Amorphous materials

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