Structural Analysis of Some Alkali Diborate Glasses

Abstract

This manuscript presents a theoretical analysis of the correlation between the computed bulk modulus and the structure of a series of multicomponent sodium diborate based glasses in terms of the bond compression model. The main parameters in the analysis were the computed elastic moduli, the average stretching force constant and the average atomic ring size. These parameters were calculated for every glass series and for every glass composition. The results showed that the average force constant and the elastic moduli of these glasses are sensitive to the decrease in the sodium diborate content. This behaviour was attributed to the increase in the molar volume, and to the role of the different modifiers.

Mechanisms of Pressure-Induced Structural Transformation in Confined Sodium Borate Glasses

“…In fact, the compressibility is composition-dependent and appears to be reversed with high and low alkali contents . Other physical and structural correlations with the corresponding alkali content have been discussed elsewhere. − …”

Effect of Y3+ on the structural and photoluminescence properties of yttrium‐doped sodium borate glass

“…The increase in n b and might be due to the substitution of Na atoms by Y atoms with higher coordination numbers. [ 39 ] As a consequence, the decrease in may refer to the glass network becoming less stretched and more rigid following the increase in the concentration of Y 2 O 3 in the glass matrix.…”