Impact of ZnO Modifier Concentration on TeO2 Glass Matrix for Optical and Gamma-Ray Shielding Capabilities

• Published in: Materials Vol. 15; no. 15; p. 5342
• Main Authors: Aloraini, Dalal A., Sayyed, M. I., Kumar, Ashok, Yasmin, Sabina, Almuqrin, Aljawhara H.
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 03.08.2022; MDPI
• Subjects: Attenuation coefficients; Energy; Gamma rays; Investigations; low energy; Mechanical properties; Metallizing; optical dielectric constant; Optical properties; Permittivity; Radiation; Radiation shielding; Refractivity; Tellurium dioxide; transmission coefficient; Zinc oxide; ZnO
• ISSN: 1996-1944; 1996-1944
• DOI: 10.3390/ma15155342

This study carried out a comparison of the optical and gamma ray shielding features of TeO2 with and without ZnO modifier concentration. Incorporating ZnO into the TeO2 network reduces the indirect band gap from 3.515–3.481 eV. When ZnO is added, refractive indices, dielectric constants, and optical dielectric constants rise from 2.271–2.278, 5.156–5.191, and 4.156–4.191 accordingly. The transmission coefficient and reflection loss are in direct opposition to each other. With increasing ZnO concentration in the selected glasses, the values of molar refractivity and molar polarizability decrease from 18.767–15.018 cm3/mol and from 7.444 × 10−24–5.957 × 10−24 cm3, respectively, while the electronic polarizability rises from 8.244 × 1024–8.273 × 1024, correspondingly. As expected by the metallization values, the glass systems are non-metallic. The linear attenuation coefficients (LAC) of the studied glass samples ensue through enhancing the photon energy range 0.0395–0.3443 MeV. There is a very slow decrease in the LAC from an energy of 0.1218–0.3443 MeV, yet there is a sharp decrease from an energy of 0.0401–0.0459 MeV. According to the obtained values of numerous shielding parameters such as LAC, MAC, HVL, MFP, and Zeff sample, Zn30 has shown the best radiation shielding ability comprising other studied samples.