Dielectric, AC conductivity and, gamma and neutron radiation shielding studies on transition metal oxides doped phosphotellurite glasses.

Authors

Pallavi Jamadar, T Sankarappa, R Ramanna, Dawalappa B Husenkhan, J S Ashwajeet

Published in

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine. Volume 236. Pages 112766. Jun 19, 2026. Epub Jun 19, 2026.

Abstract

V₂O₅ and Fe₂O₃ doped phosphotellurite glasses were synthesized and investigated experimentally for density, structure, temperature and frequency dependent dielectric properties, ac conductivity and, radiation shielding parameters were computed. Electric modulus and impedance spectra exhibited a non-Debye type relaxation behavior. Conductivity master curves demonstrated that the dielectric relaxation and conductivity depend on composition and unaffected by temperature. By fitting measured conductivity to Jonscher's universal power law, conductivity (ac and dc) and frequency exponent were extracted. Conductivity and activation energy passed through maximum and minimum respectively for 0.2 mol fractions of Fe₂O₃ indicating occurrence of mixed transition effect. Overall electric studies suggest that the present glasses are promising candidates for energy storage devices and solid-state electrolytes. For the energy range 0.015-15 MeV, various gamma and neutron shielding parameters were computed using the Phy-X software. They were analyzed and compared with literature and found that these glasses are most useful for radiation shielding.

PMID:
42330565
Bibliographic data and abstract were imported from PubMed on 23 Jun 2026.

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