Thermal and FT-IR Properties of Semiconducting SnO<SUB>2</SUB>-PbO-V<SUB>2</SUB>O<SUB>5</SUB>Glass System

• 作者: Balireddy Vasundhara Ponnada Tejeswara Rao
• 来源期刊: 玻璃与陶瓷期刊(英文)
• 学科: 化学
• 关键词: DSC XRD FT-IR Lead VANADATE GLASSES
• 年，卷（期）: 2015,（3）
• 页码范围: 53-58
• 页数: 6页
• 分类号: O6

摘要

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.