Short-Range Structural Insight into Lithium-Substituted Barium Vanadate Glasses Using Raman and EPR Spectroscopy as Probes

We present a corroborative study of the structural characterization lithium-substituted barium vanadate glasses using Raman and electron paramagnetic resonance (EPR) spectroscopy. Investigation thermal physical properties these showed gradual increase in concentration nonbridging oxygen. EPR analysis gave an insight into changing structure glasses. Both spectroscopic techniques confirmed that vanadium is as distorted VO6 octahedra. From both techniques, it proposed lithium ion prefers to occupy planar positions octahedra, thus reducing tetragonal distortion making environment around network-forming unit glass matrix more homogeneous we content. The V4+ non-monotonic variation with Li2O indicated by studies EPR, which indicates change