Optical Properties of SiO2 – TiO2 – La2O3 – Na2O – Y2O3 Glasses and A Novel Process of Preparing the Parent Glass-Ceramics

Abstract

Quaternary glasses with the composition 50SiO2-25TiO2-5La2O3-(20-x) Na2O-xY2O3 where : (0 ≤ ≥ 10) were synthesized using the melt-quench technique. XRD examined the nature of prepared glasses. UV-spectroscopic of investigated glass system studied at room temperature. Both optical bandgap and refractive index of the present glass have been increased. The polarizability and basicity were determined. Thermal parameter values increased as Y2O3 increased. Under controlling heat, the glass-ceramic were prepared and confirmed using XRD. Glass-ceramics are examined using SEM to evaluate a microstructure. Ultrasonic velocities and elastic-moduli of glass-ceramic samples are increased because of the increase in internal energy. The role of Y2O3 modifier in the glass system is clearly demonstrated. Y2O3 also works as an excellent nucleating agent that can induce crystallizations, supporting in the creation of the sub-phase of glass-ceramics.

Impact of bridging oxygens formation on optical properties of Fe3+ doped Li2O–Al2O3–SiO2–TiO2 glasses

“…where k and λ shows extinction coefficient and the wavelength of EW in vacuum condition, respectively [11,22,23]. Using Eq.…”

“…It is almost obvious that introduction of a special dopant into a relatively suitable host could be used for the generation of precise optical and electrical devices. As a dopant, when d outer-shell electrons of transition metals is surrounded by the attraction and repulsion fields, there will be a special ligand field for the dopants which could lead to a special optical or electrical properties in the bulk [11][12][13]. According to the feathers of LAS glasses like high transmissibility, near zero thermal expansion and non-linear optical properties, they are utilized in advanced applications.…”

A Study of Thermal, and Optical Properties of 22SiO2- 23Bi2O3-37B2O3-13TiO2-(5-x) LiF- x BaO Glasses

“…Bandgap energies for direct and indirect transitions, according to Tauc's theory [31][32][33][34][35][36] are evaluated by:h ¼ C ðh À E opt Þ s : Figs. 6 and 7 present the correlation between ( h ) 1/2 , (h ) 2 , and (h ).…”

“…Glass with (TMO) has been used in a wide range of applications in recent years due to its unique optoelectronic characteristics [6][7][8][9]. TiO 2 is a common glass ingredient used to improve the optics and thermal features of the glass.…”

Effect of CeO2 /Er2O3 co-doping on spectroscopic properties of zinc fluoroborate glasses

“…RE doped glasses have piqued the interest of scientists. The current state of up-converting (UC) materials for modern displays and lighting devices indicates that efficient low-phonon materials for upconversion are desperately needed [29][30][31][32][33][34][35][36][37][38][39][40]. One of the most efficient UC mechanisms involves the interaction between two RE [41].…”