TITLE:
Thermal and FT-IR Properties of Semiconducting SnO2-PbO-V2O5 Glass System
AUTHORS:
Ponnada Tejeswara Rao, Balireddy Vasundhara
KEYWORDS:
DSC, XRD, FT-IR, Lead Vanadate Glasses
JOURNAL NAME:
New Journal of Glass and Ceramics,
Vol.5 No.3,
July
23,
2015
ABSTRACT: Melt quenched “SnO2(50-x)PbO:50V2O5” glass system containing x = 5, 10, 15 in molar ratio has
been investigated. Effects of heating rate, glass transition, crystallization, melting temperature
and infrared spectra of SnO2 substituted PbO-V2O5 glass system are reported. XRD results show
that perfect vitrification has been achieved for all the glass samples after annealing at 150°C. DSC
results have indicated that eutectic composition of the lead metavanadate has been maintained for
all the glass systems up to 15 mole% of substitution. IR spectra for a SnO2 substitution of 5 mole%
V=O stretching frequency occur at 966 cm-1 without appearance of any additional peak. But for 10
mole% and 15 mole% SnO2 substituted samples, additional peaks appear at 1023 and 1005 cm-1
indicating the effect of SnO2 in the vanadate crystalline matrix such that there is an elongation of
V=O bond. Since the crystalline matrix is affected, we can expect similar effect in the glass matrix
also.