The impact of V2O5 on structure, dielectric, and radiation-shielding characteristics of borate-lead-fluoride glasses

• Published in: Optical and quantum electronics 2024-09, Vol.56 (10), Article 1648
• Main Authors: Al Huwayz, Maryam, Almuqrin, Aljawhara H., Shaaban, Shaaban M., Mesalam, Yehya I., Rammah, Y. S., Shams, M. S., Kotb, S. M., Talaat, S., Elsad, R. A.
• Format: Article
• Language: English
• Subjects: Attenuation coefficients; Characterization and Evaluation of Materials; Computer Communication Networks; Dielectric relaxation; Electrical Engineering; Fluorides; Functional groups; Glass; Lasers; Optical Devices; Optics; Permittivity; Photonics; Physics; Physics and Astronomy; Radiation; Radiation shielding; Vanadium oxides; Vanadium pentoxide
• ISSN: 1572-817X; 0306-8919; 1572-817X
• DOI: 10.1007/s11082-024-07460-x

The effect of vanadium oxide (V 2 O 5 ) on the structural, dielectric, and shielding features of borate-lead-fluoride glasses was investigated. The density of the glass network increased steadily from 3.18 to 3.28 g.cm −3 as the vanadium content increased from 0.0 to 10 mol%. The evolution of functional groups and units such as non-bridging BO 3 , and bridging BO 4 , in our newly developed glasses was exposed by FTIR analysis. Since the fraction of bridging units BO 4 increases when V 2 O 5 is added up to 2 mol%. This indicates that the conversion of BO 3 groups into BO 4 groups is facilitated by V 2 O 5 . However, at higher concentrations of V 2 O 5 (> 2 mol%), a reversal reaction occurs wherein the BO 3 unit fraction increases and the BO 4 unit fraction starts to decrease. All the glasses loaded with different amounts of V 2 O 5  mol% had a sharp decline in dielectric constant with increasing frequency over the low frequency interval. As the V 2 O 5 level grew up to 2 mol%, the dielectric constant value was marginally reduced and then increased for higher concentrations. All of the glasses under examination displayed different relaxation peaks in the range of 100 Hz to 20 kHz on their measured loss tangent (tan δ), but vanadium doping caused them to shift to higher frequencies. At 0.015 MeV, the maximum MAC values for the V-0.0 to V-10.0 samples were found to be 29.205 cm 2 /g to 30.082 cm 2 /g. In terms of radiation shielding, the V-10.0 sample exhibited the highest values of mass (MAC) and linear (LAC) attenuation coefficients, while the same sample possessed the lowest values of half value layer and mean free path among all investigated glasses. Therefore, the investigate glass can be used in several optical and radiation shielding applications.