A new approach to estimate refractive index, electronic polarizability, and optical basicity of binary oxide glasses

In this paper, we introduce the optical electronegativity Δχglass* to predict basic properties of binary oxide glasses. Optical electronegativity Δχglass* of numerous binary oxide glasses has been evaluated on the basis of two different properties: the linear refractive index n and energy gap Eg, which have demonstrated remarkable correlation. Furthermore, we also calculate the refractive index n   through the energy-gap-based optical electronegativity ΔχE*, and obtain a perfect linear correlation between the calculated refractive index ncal and the n0 values of Dimitrov and Komatsu. The average electronic oxide polarizability αO2-αO2- and the optical basicity Λ   of binary oxide glasses have been estimated on the basis of the optical electronegativity Δχglass* calculated from the refractive index n  . The estimated values are in good agreement with the available experimental data. The present method needs only one original experimental parameter to estimate the optical electronegativity Δχglass*, which is the refractive index n.