Effect of TiO2 doping and gamma ray irradiation on the properties of SrO–B2O3 glasses

• Published in: Journal of non-crystalline solids Vol. 379; pp. 214 - 219
• Main Authors: Abdelghany, A.M., ElBatal, H.A.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier B.V 01.11.2013; Elsevier
• Subjects: Borates; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Fourier transforms; FTIR; Gamma ray; Glass; Glasses (including metallic glasses); Infrared absorption; Infrared radiation; Lattice dynamics; Materials science; Optical constants: refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of bulk materials and thin films; Phonon states and bands, normal modes, and phonon dispersion; Phonons and vibrations in crystal lattices; Physical radiation effects, radiation damage; Physics; Specific materials; Strontium; Strontium borate glass; Structure of solids and liquids; crystallography; TiO2; Titanium; Titanium dioxide; UV-Vis; γ ray effects; UV-Vis; Gamma ray; FTIR; Strontium borate glass; TiO2; Fourier transform spectroscopy; Doping; Glass; Diffraction pattern; Iron; XRD; Gamma irradiation; Absorption band; Titanium; Absorption spectra; Fourier-transformed infrared spectrometry; TiO; Optical absorption; Doses; Ultraviolet spectra; Binary systems; Ultraviolet radiation; Gamma radiation; Impurities; Vibrational modes; Borates
• ISSN: 0022-3093; 1873-4812
• DOI: 10.1016/j.jnoncrysol.2013.08.020

Glasses from the binary strontium borate system of the basic composition 45%SrO–55%B2O3 together with samples containing different concentrations of TiO2 (2–10%) replacing equivalent SrO were prepared. The prepared samples were characterized by means of combined Fourier transform infrared absorption (FTIR) and UV-visible optical absorption spectroscopic measurements before and after subjecting the glasses to gamma irradiation with doses up to 8Mrad. XRD diffraction patterns have indicated the amorphous nature of the prepared glasses over the entire compositional range. Binary undoped strontium borate glass exhibits strong UV absorption bands which are attributed to the presence of unavoidable trace iron impurities (mainly Fe3+ ions) while the TiO2 containing glasses reveal an additional UV band which can be related to the presence of titanium ions mostly as tetravalent Ti4+ ions in this host strontium borate glass. FTIR spectra of the prepared glasses show the appearance of both triangular and tetrahedral borate units in their specific wavenumbers with the first groups in higher ratio. Minor changes have been identified in the intensity or position of the borate IR vibrational bands upon the increase of TiO2 within the glass content. The resolution of a distinct IR peak at 420cm−1 can be related to the presence of B―O or Ti―O―Ti bonding upon the increase of TiO2 content. •Glasses of composition Sr2O3 45%–B2O3 55% doped with TiO2 were prepared.•Infrared and UV-visible absorption spectra were measured before and after gamma irradiation.•Experimental data indicate the presence of both triangular and tetrahedral borate groups.•Shielding behavior of strontium borate glasses was observed upon irradiation.