Infrared, Raman, And Elctron Spin Resonance Studies Of Vitreous Alkaline Tungsten Phosphates And Related Glasses

Ternary phosphates are found to vitrify within large domains of compositions inside the phase diagrams P205-WO3-A20(A=Li, Na). Structural approach of highly modified glasses was investigated using various spectroscopic techniques such as infrared, Raman, and electron spin resonance (ESR). These glasses were found to contain MO6 octahedra, MO4 tetrahedra, M2O7 dimers, PO4 tetrahedra, and also P2O7 or metaphosphate chains, depending on the composition considered. As shown in earlier studies, the glass network is progressively depolymerized as the content of A2O increases.