Effects of CdF2 and WO3 additions on the microstructural and thermal properties of TeO2–CdF2–WO3 glass system

Tatar, Demet; Öveçoğlu, M. Lütfi; Özen, G.

doi:10.1016/j.ceramint.2011.10.023

Cited by 1 publication

(1 citation statement)

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“…The crystalline phases observed in tellurite glasses as α-TeO 2 , β-TeO 2 , γ-TeO 2 , and δ-TeO 2 studied by Tatar et al [28], and Öz et al [14] for the TeO 2 CdF 2 WO 3 and (1 − x)TeO 2 xK 2 O glass systems. All SEM micrographs were taken in the secondary electron imaging mode.…”

Section: Glass Samplesmentioning

confidence: 99%

Investigation of Infrared and Raman Spectra of TeO₂-Nb₂O₅-TiO₂Glasses

Kabalcı

Gökçe

2014

Acta Phys. Pol. A

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X-ray diraction, infrared (IR), Raman spectroscopy and scanning electron microscope techniques have been used to investigate the microstructural properties of the glass materials. In this work, a new type of tellurite based optical glasses with TeO2/Nb2O5/TiO2 for dierent xNb2O5 (x = 5, 10, 15, and 20 mol.%) glass compositions at constant 5 mol.% TiO2 ratio were prepared. The eect of Nb2O5 contents on the structural unit of (95 − x)TeO2 (x)Nb2O55TiO2 glass network, and the intensity ratios of the Raman peaks were investigated. The results indicate that for dierent Nb2O5 content 5 to 20 mol.% in the glass system, three vibrational peaks around 650, 800, and 920 cm −1 which correspond to the structural bonding of the glass were observed in the range of 5002000 cmfor the IR spectra. Furthermore, from the Raman results a structural evolution was determined with the number of structural units such as [NbO6] 7− , TeO3+1 (polyhedra), TeO4 (trigonal bipyramids), TeO3 (trigonal pyramids) or TeO3+1 (polyhedra), and [NbO4] 3− for this ternary glass system.

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Section: Glass Samplesmentioning

confidence: 99%