A chemical approach to understand fragilities of glass-forming liquids

Article Abstract:

A study shows that the use of fragility-modified activation barriers in the Arrhenius function account for the whole gamut of viscosity behavior of liquids. It is concluded that fragility can be a universal scaling parameter to collapse all viscosity curves, and the fragilities of liquids are determined by the nature of the chemical bonding in them.

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Absence of germanate anomaly in ternary lithium germanophosphate glasses: modification behavior of mixed glass system of strong and fragile formers

Article Abstract:

Lithium germanophosphate glasses are synthesized over a wide range of compositions and their thermal and spectroscopic behavior have been investigated. The study concluded that modification occurs almost exclusively on the P2O5 part of the structure and the GeO2 network appears unaffected.

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Anomalous ionic conductivity increase in [Li.sub.2]S + Ge[S.sub.2] + Ge[O.sub.2] glasses

Article Abstract:

The anomalous ionic conductivities of 0.5[Li.sub.2]S + 0.5[(1-x)Ge[S.sub.2] + xGe[O.sub.2]] glasses are investigated. The addition of oxides has contracted the glass structure leading to an increase in the conductivity activation energy and a decrease in the conductivity.

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