Oxides of interest for electrolyte application are those of ionic-covalent and negligible metallic character that is associated with unbounded electrons or electronic defects. The ionicity of oxides decreases w
It results, in addition, in more covalent Pb–O bonds and a lower coordination number of lead. The variation versus lead content of the PbO molar Acknowledgment This work has been sponsored by the CICYT of Spain through the project MAT (2000-0952-C02-01) and by an Integrated Action ...
Borate is one of the chemically powerful glass modelling oxides and when alkali oxides are added such as zinc, lithium, and aluminium to amorphous boron oxide, its characteristics such as covalent network are remarkably affected causing the formation of ionic sites which embed the changing alkali ...
The covalent Conclusion The Molecular dynamic simulations were used to collect structural information of the Li2O-MgO-Al2O3-SiO glasses, and the results were compared with Raman, X-ray photoelectron spectroscopy, Differential thermal analysis, and Vickers hardness to elucidate the effect of Li2O ...
The UV–VIS–NIR absorption studies were carried out to calculate the bonding parameters (β¯ and δ), to identify the ionic/covalent nature of the glasses. The JO parameters, experimental and theoretical oscillator strengths were also determined and reported. The luminescence spectra have been ...