Thermal,IR, Raman characteristics,Raman gain coefficient and bandwidths in quaternary glasses |
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| Institution: | 1. Physics Department, Faculty of Science, Zagazig University, Zagazig, Egypt;2. Department of Physics, Faculty of Science, Al-Azhar University, Assuit Branch, Assuit, Egypt;3. Department of Physics, Faculty of Science, Al-Azhar University, Nasr City, 11884 Cairo, Egypt;1. Computational Chemistry Center for Nanotechnology and Department of Chemistry, Faculty of Science and Technology, Rajabhat Maha Sarakham University, Maha Sarakham 44000, Thailand;2. Center of Excellence for Innovation in Chemistry and Supramolecular Chemistry Research Unit, Department of Chemistry, Faculty of Science, Mahasarakham University, Maha Sarakham 44150, Thailand;1. Centre for Research in Earth and Space Science, York University, Petrie Science Building, 4700 Keele St, Toronto, M3J 1P3, Ontario, Canada;2. Department of Mathematics and Statistics, York University, Petrie Science Building, 4700 Keele St, Toronto, M3J 1P3, Ontario, Canada;3. Departamento de Física, MALTA-Consolider Team, IMN, and IUdEA, Universidad de la Laguna, Apdo. Correos 456, 38200, San Cristóbal de la Laguna, Santa Cruz de Tenerife, Spain |
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| Abstract: | Tellurite glasses with composition 75TeO2–5WO3–15Nb2O5–5MxOy in mol%, where MxOy = (Na2O, Ag2O, ZnO, MgO, CuO, NiO, TiO2, MnO2) have been prepared by using the conventional melt-quenching method. Thermal characteristic of prepared glasses were investigated by using DTA techniques. It was found that the glass with the composition 751TeO2–5WO3–15Nb2O5–5TiO2 had high thermal stability (ΔT = 122 °C at heating rate 15 K/min). Raman gain coefficients and bandwidths of prepared glasses for Raman gain media were evaluated. The glass with composition 75TeO2–5WO3–15Nb2O5–5Na2O had the maximum value of Raman gain coefficient (g = 4.43 × 10?12 m/W) and it was 24 times as large as silica glass. The highest value of full width half maximum (FWHM ≈ 185 cm?1) was observed in glass system 75TeO2–5WO3–15Nb2O5–5NiO. Finally, the structure of the glasses was investigated through deconvolution Raman and IR spectra. |
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| Keywords: | Tellurite IR Raman DTA Glasses |
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