Synthesis and characterization of barium fluoride substituted zinc tellurite glasses
| Autor: | Sundarrajan Asokan, K. Aishwarya, G. Vinitha, N. Manikandan, G. Sreevidya Varma |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Barium fluoride Analytical chemistry chemistry.chemical_element Infrared spectroscopy 02 engineering and technology Zinc 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials symbols.namesake chemistry.chemical_compound chemistry Impurity 0103 physical sciences Fluorine symbols Thermal stability Electrical and Electronic Engineering 0210 nano-technology Raman spectroscopy Spectroscopy |
| Zdroj: | Physica B: Condensed Matter. 526:84-88 |
| ISSN: | 0921-4526 |
| DOI: | 10.1016/j.physb.2017.09.039 |
| Popis: | Glasses in the TeO 2 -ZnO-BaF 2 system were prepared by standard melt quenching technique and were characterized for their thermal, optical and structural properties. Samples were found to show good thermal stability with values ranging above 100 °C for all the compositions. Optical bandgap and refractive index values were calculated from linear optical measurements using UV-Vis spectroscopy. Infrared spectra showed the presence of hydroxyl groups in the glasses indicating that the effect of fluorine was negligible in removing the hydroxyl impurities for the experimental conditions and compositions used. Raman measurements showed the modification occurring in the glass network due to addition of barium fluoride in terms of increase in the formation of non-bridging oxygen atoms compared to strong Te-O-Te linkages in the glass matrix. |
| Databáze: | OpenAIRE |
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