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K. A. ALY1,2,* , Y. B. SADDEEK1, I. M. EL. KASHEF3
- Physics Department, Faculty of Science, Al-Azhar University, P.O. 71452, Assiut - Egypt.
- Physics Department, Faculty of Science and Arts Khulais, University of Jeddah, Saudi Arabia.
- Department of Physics, Faculty of Education, Suez Canal University, Al Arish, Egypt
Sodium borate glasses modified with TiO2 were prepared and investigated with UV spectroscopy and DTA. The results indicated some structural modification of the borate network as the TiO2 content increases. The UV transmission decreases while the UV absorption increases, which increases the refractive index and the optical energy band gap. Also, the detected bulk modulus along with the Tg decrease. Introducing TiO2 in the glass network resulted in an increase in coordination number of the glass, so the concentration of its basic structural unit TiO6 units will increase resulting in the creation of more NBOs. This process was attributed to the increase of the density, the third-order nonlinear optical susceptibility (χ(3)) and the fragility of the glasses which decreased the rigidity..
Oxides, Differential thermal analysis (DTA), Crystallization.
Submitted at: Jan. 17, 2016
Accepted at: Oct. 10, 2017
K. A. ALY, Y. B. SADDEEK, I. M. EL. KASHEF, Physical characterization of Titania modified sodium borate glasses, Journal of Optoelectronics and Advanced Materials Vol. 19, Iss. 9-10, pp. 623-628 (2017)
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