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Relaxation mechanism in silver borate glasses

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Abstract

The electrical properties of silver ion conducting borate glasses are investigated by impedance spectroscopy in the temperature range 303–453 K. Impedance data are presented in the Nyquist plots. This representation allows the determination of the relaxation frequencies of the samples. The relaxation frequency follows an Arrhenius behavior. X-ray diffraction analysis shows that, due to the hygroscopic behavior of borate glasses, boric acid crystals are formed. In AgI-containing silver borate glasses, the β-AgI phase is formed and its structure mostly depends on the glass formation process, i.e., quenching or thermal treatment during melt quenching. In AgBr-containing glasses, a phase of AgBr is formed. The electrical properties of these glass systems can be described as a parallel RC circuit in which R represents the bulk resistance R B and C represents the bulk geometric capacitance C B of the sample. Impedance spectroscopy shows the Cole-Davidson type behavior.

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Authors and Affiliations

  1. Department of Physics, Government Vidarbha Institute of Science & Humanities, Amravati, 444604, India

    S. P. Yawale & S. S. Yawale

  2. Department of Physics, Jagdamba Mahavidyalaya, Achalpur, 444806, India

    V. T. Kharche

Authors
  1. S. P. Yawale
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  2. V. T. Kharche
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  3. S. S. Yawale
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Correspondence to S. P. Yawale.

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Published in Russian in Fizika i Khimiya Stekla.

The text was submitted by the authors in English.

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Yawale, S.P., Kharche, V.T. & Yawale, S.S. Relaxation mechanism in silver borate glasses. Glass Phys Chem 34, 381–388 (2008). https://doi.org/10.1134/S1087659608040068

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