Network-Forming Units, Energy Landscapes, and Conductivity Activation Energies in Alkali Borophosphate Glasses: Analytical Approaches

A major challenge in the modeling of ionically conducting glasses is to understand how large variety possible chemical compositions and specific structural properties influence ionic transport quantities. Here we revisit extend a theoretical approach for alkali borophosphate glasses, where changes conductivity activation energies with borate phosphate mixing ratio are related modifications site energy landscape. The landscape caused by varying amounts different units forming glassy network, which lead spatial redistributions counter-charges mobile ions. Theoretical approaches presented calculate variations both network former unit concentrations glass composition. Applications several show good agreement experimental data.