A complete analysis of the structural, optical, and gamma-ray attenuation of Dy3+ doped modifiers dependent Lead phosphate boro-tellurite glasses

• Published in: Optik (Stuttgart) Vol. 264; p. 169433
• Main Authors: Poojha, M.K. Komal, Naseer, K.A., Al-Ghamdi, Hanan, Almuqrin, Aljawhara H., Sayyed, M.I., Marimuthu, K.
• Format: Journal Article
• Language: English
• Published: Elsevier GmbH 01.08.2022
• Subjects: Half value layer; Mass attenuation coefficient; Mean free path; Modifiers; Physical properties; Structural properties; Tauc’s plot; Mean free path; Mass attenuation coefficient; Physical properties; Modifiers; Structural properties; Tauc’s plot; Half value layer
• ISSN: 0030-4026; 1618-1336
• DOI: 10.1016/j.ijleo.2022.169433

The current research scrutinizes the potential of the Dy3+ doped modifier-dependent (BaO, SrO, ZnO, CaO, LiO) lead phosphate boro-tellurite glasses as radiation attenuating channels. Various analytical studies observed the detailed results of all the above-listed modifiers in the boro-tellurite network. The amorphous character of the samples is established through XRD pattern. The FTIR study confirmed the bending and stretching vibration of BO3, Te−O, P − OH, and Pb−O units in the prepared glasses. The compositional variation in the glass structure was noticed through density and refractive index values. The Metallization criterion revealed the nature of the samples to be non-metal. Optical analyses employed UV−Vis−NIR absorption spectra and the energy transitions involved in Dy3+ ions levels were analyzed. Using Tauc’s plot, the direct energy bandgaps of the proposed glasses were examined, and the estimated Urbach’s energy is lower for the Zn-containing glass (39B2O3 +20PbO+15TeO2 +10 P2O5 +15ZnO+1Dy2O3; ZnPbP:Dy), which implies that the structure possesses fewer defects. We evaluated the radiation attenuation factors for these glasses to examine the impact of these oxides on the attenuation ability of the current glasses. Also, we examined the impact of the density of each glass on the attenuation ability of the glasses. The highest linear attenuation coefficient happened at 0.284 MeV (1.057, 0.988, 1.127, 0.957 and 0.836 cm−1 for BaPbP: Dy, SrPbP: Dy, ZnPbP: Dy, CaPbP: Dy and LiPbP: Dy respectively) and the lowest at 1.333 MeV (0.231, 0.222, 0.253, 0.213 and 0.182 cm−1 for the same glasses respectively). The glass which contains ZnO (ZnPbP: Dy) had the highest LAC, while the sample with LiO had the least LAC. The average mean free path for the prepared glasses corresponding to the two energies, 0.284 MeV and 0.662 MeV, is 1.79, 1.89, 1.65, 1.96, and 2.27 cm for the glasses with BaO, SrO, ZnO, CaO, and LiO, respectively.