Oxide ion/electronic polarizability, optical basicity and linear dielectric susceptibility of TeO2 – B2O3 – SiO2 glasses. Issue 15 (1st August 2021)

• Record Type: Journal Article
• Authors: Umar, S.A.; Halimah, M.K.; Ibrahim, G.G.; Alade, I.O.; Azlan, M.N.; El-Mallawany, R.; Hamza, A.M.; Nazrin, S.N.; Grema, L.U.; Otto, M.S.
• Is Part Of: Ceramics international. Volume 47:Issue 15(2021)
• Page Start: 21668
• Page End: 21678
• Publication Date: 2021-08-01
• Subjects: SiO2 -- Polarizability -- Optical basicity -- Dielectric susceptiblity -- Substrates; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2021.04.180
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: A system of bio-silica borotellurite glasses was fabricated based on the chemical formula [(TeO2 )0.7 (B2 O3 )0.3 ]1-x (SiO2 )x with x = 0.1, 0.2, 0.3, and 0.4 using the melt-quenching technique using silica (98.548% SiO2, from rice husk), TeO2 (Alfar Aeser, 99.9%) and B2 O3 (Alfar Aeser, 99.9%). Measurements and characterizations such as density and molar volume measurements, XRD analysis, FTIR, and UV–Vis spectroscopes were performed on the studied glasses. The objective was to determine the glasses' applicability in optoelectronics, non-linear optics, and laser technologies through polarizability, linear electric susceptibility, and optical basicity study. Apart from confirming the amorphous nature of the glasses, the XRD analysis identified the presence of a crystalline phase of tellurium oxide (α-TeO2 ) formed. The FTIR spectral study revealed the presence of TeO3, BO3, and SiO4 structural units in the studied glasses. The refractive index (2.3026 – 2.2651), molar polarizability (8.0696 – 9.4334 Å 3 ), oxide ion polarizability (3.2970 – 3.6202 Å 3 ), electronic polarizability (0.2296 – 0.2335 Å 3 ), dielectric constant (5.1307 – 5.3019), optical basicity (0.6719 – 0.7998), metallization criterion (0.410853 – 0.420714) and electric susceptibility (0.3286 – 0.3422 esu) of the glasses were presented. With the high refractive index and favourable electronic/oxide ion polarizability as well as good electric susceptibility, the glasses have shown great potential for optical fibre and laser applications. Metallization criterion value falls in the range of glasses with great potentials for non-linear optical application. The dielectric value suggests the glasses represent wideband semiconducting glasses believed to be good for application in microelectronic substrates fabrication.