Abstract
The photoelastic constant(PEC) and compositional dependence of structure of binary SnO-P2O5 (SP) glasses with 52-72 SnO mol% were studied. PEC was determined using a frequency stabilized transverse Zeeman laser (STZL) at 633nm. The photoelastic constant (PEC) decreases with increasing SnO concentration. The structure of SP glasses was evaluated by FT/IR and Raman spectroscopy. The water durability was investigated by weight loss and Raman spectroscopy for SP glass samples immersed in distilled water at 30-70oC. Raman spectra indicated in the immersion test that Q1 units form and Q2 units decrease as a result of water attack upon the phosphate chains with increasing immersion time in 62SnO-38P2O5 glass. The relationship between the properties and glass structure with chemical bonding is discussed.
