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Impact of TeO2–B2O3 manipulation on physical, structural, optical and radiation shielding properties of Ho/Yb codoped mixed glass former borotellurite glass by M.M. Naaim; M.F. Malek; M.I. Sayyed; N.F.M. Sahapini; R. Hisam is a Materials Science article available to read on EtoBox.

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In this work, (75-x)B 2 O 3 -xTeO 2 -11Bi 2 O 3 -10Li 2 O-1Ho 2 O 3 -3Yb 2 O 3 (x = 10-60 mol%) mixed glass former (MGF) glasses were prepared by using the melt-quenching method to investigate the effect of mixed glass former between B 2 O 3 and TeO 2 on the structural, optical and radiation shielding properties of glass. The amorphous nature of the glass samples was confirmed through XRD measurement. Optical ultraviolet-visible light (UV-Vis) spectroscopy revealed that the direct and indirect optical band gap (E opt ) decreased as TeO 2 content increased except for the anomaly at x = 30 mol% due to the interchanging dominance of bridging oxygen (BO) and nonbridging oxygen (NBO) in the glass network. Both direct and indirect refractive indices, n posted an increment except for x = 30 mol% due to polarizability influence of BO and NBO. Urbach energy, E u declined thus indicating lesser disorder and less defects on the glass structure. The radiation shielding properties of the glass samples were determined for 15 keV-15 MeV photon energy range by using Phy-X/PSD software. Atomic number-dependent parameters such as mass attenuation coefficient (MAC) and effective atomic number (Z eff

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Author

M.M. Naaim; M.F. Malek; M.I. Sayyed; N.F.M. Sahapini; R. Hisam

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Materials Science (Physical Sciences)