Optical properties of Er3+ doped alkali-chloro phosphate glasses for optical amplifiers

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 the large variety of possible chemical compositions and specific structural properties influence ionic transport quantities. Here we revisit and extend a theoretical approach for alkali borophosphate glasses, where changes of conductivity activation energies with the borate to phosphate mixing ratio are related to modifications of the ionic site energy landscape. The landscape modifications are caused by varying amounts of different units forming the glassy network, which lead to spatial redistributions of t…

玻璃中混合碱效应的理论

Theory for the mixed alkali effect in glasses

研究通过热激活跳跃传输理论，解释混合离子对离子输运性质非线性影响，揭示混合碱效应源于不同离子占据不同能级的统计力学与动力学机制。

Peculiarities of the defect model for the mixed mobile ion effect in mixed cation glasses

Peculiarities of mixed cation effect in ternary glasses whose composition involves alkali and non-alkali unicharged ions and/or alkaline earth ions are explored within context of defect model for mixed mobile ion effect (V. Belostotsky, J. Non-Cryst. Solids (2007)). In mixed alkaline earth glasses mixed cation effect is observed as in ionic diffusivity as well as in the glass transition temperature reflecting the fact that movement of dissimilar ions of unequal size is accompanied by formation of intrinsic defects in glass matrix when mobile ions enter foreign sites. It is qualitatively simila…

Predicting conductivities of alkali borophosphate glasses based on site energy distributions derived from network former unit concentrations

For ion transport in network glasses, it is a great challenge to predict conductivities specifically based on structural properties. To this end it is necessary to gain an understanding of the energy landscape where the thermally activated hopping motion of the ions takes place. For alkali borophosphate glasses, a statistical mechanical approach was suggested to predict essential characteristics of the distribution of energies at the residence sites of the mobile alkali ions. The corresponding distribution of site energies was derived from the chemical units forming the glassy network. A hoppi…