Polarizability, optical basicity and optical properties of SiO2B2O3Bi2O3TeO2 glass system

• Published in: Applied physics. A, Materials science & processing Materials science & processing, 2018-07, Vol.124 (7), p.1-9, Article 486
• Main Authors: Kashif, I., Ratep, A., Adel, Gh
• Format: Article
• Language: English
• Subjects: Applied physics; Bismuth oxides; Bismuth trioxide; Boron oxides; Characterization and Evaluation of Materials; Condensed Matter Physics; Energy gap; Glass; Machines; Manufacturing; Materials science; Metallizing; Molar volume; Nanotechnology; Optical and Electronic Materials; Optical basicity; Optical properties; Oxygen content; Packing density; Physics; Physics and Astronomy; Processes; Refractivity; Silicon dioxide; Surfaces and Interfaces; Thermal stability; Thin Films
• ISSN: 0947-8396; 1432-0630
• DOI: 10.1007/s00339-018-1904-y

Glasses having a composition x SiO 2 x B 2 O 3 (95−2 x ) Bi 2 O 3 5TeO 2 where x  = (5, 10, 15, 20, 25) prepared by the melt-quenching technique. Thermal stability, density, optical transmittance, and the refractive index of these glasses investigated. Glass samples were transparent in the visible to near-infrared (NIR) region and had a high refractive index. A number of glass samples have high glass-forming ability. This indicates that the quarterly glasses are suitable for optical applications in the visible to the NIR region. Bi 2 O 3 substituted by B 2 O 3 and SiO 2 on optical properties discussed. It suggested that the substitution of Bi 2 O 3 increased the density, molar volume, the molar polarizability, optical basicity and refractive index in addition to, the oxygen packing density, the optical energy gap, and metallization decrease. These results are helpful for designing new optical glasses controlled to have a higher refractive index. All studied glass presented high nonlinearities, and the addition of network modifiers made a little contribution. Results clarified the bandgap energy reduction, which associated with the growth within the non-bridging oxygen content with the addition of the network modifier. An increase in the refractive index nonlinearity explained by the optical basicity and the high electronic polarizability of the modifier ions.