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AC Conductivity and Dielectric Properties of Borotellurite Glass

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Abstract

Borotellurite glasses with formula 60B2O3−10ZnO−(30 − x)NaF−xTeO2 (x = 0 mol.%, 5 mol.%, 10 mol.%, and 15 mol.%) have been synthesized by thermal melting. X-ray diffraction (XRD) analysis confirmed that the glasses were amorphous. The glass density (ρ) was determined by the Archimedes method at room temperature. The density (ρ) and molar volume (V m) were found to increase with increasing TeO2 content. The direct-current (DC) conductivity was measured in the temperature range from 473 K to 623 K, in which the electrical activation energy of ionic conduction increased from 0.27 eV to 0.48 eV with increasing TeO2 content from 0 mol.% to 15 mol.%. The dielectric parameters and alternating-current (AC) conductivity (σ ac) were investigated in the frequency range from 1 kHz to 1 MHz and temperature range from 300 K to 633 K. The AC conductivity and dielectric constant decreased with increasing TeO2 content from 0 mol.% to 15 mol.%.

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Authors and Affiliations

  1. Physics and Engineering Mathematics Department, Faculty of Electronic Engineering, Menoufia University, Menouf, 32952, Egypt

    T. A. Taha

  2. Solid State Electronics Laboratory, Solid State Physics Department, Physics Division, National Research Centre, 33 El Bohouth St., Dokki, Giza, P.O.12622, Egypt

    A. A. Azab

Authors
  1. T. A. Taha
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  2. A. A. Azab
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Correspondence to T. A. Taha.

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Taha, T.A., Azab, A.A. AC Conductivity and Dielectric Properties of Borotellurite Glass. J. Electron. Mater. 45, 5170–5177 (2016). https://doi.org/10.1007/s11664-016-4749-1

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  • DOI: https://doi.org/10.1007/s11664-016-4749-1

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