Abstract
The technique for measuring the electric conductivity of glass-forming melts and glasses over a wide temperature range covering the glass transltion region is described in detail. The technique is based on the application of small-sized electrodes that provide the retention of their mutual arrangement in melts and glasses and prevent the appearance of mechanical stresses exceeding the ultimate strength of glasses. The potentialities of the proposed technique are illustrated by the measurement of the electric conductivity for several standard glasses. The coefficients of equations describing the temperature dependences of the electric conductivity above and below the glass transltion range are determined. The technique makes it possible to obtain the hysteresis loops of the electric conductivity at constant rates of cooling and the subsequent heating and also the temperature dependences of the first and second derivatives of the electric conductivity with respect to temperature.
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Startsev, Y.K. Technique for measuring the electric conductivity of glasses and melts over a wide temperature range covering the glass transition region. Glass Phys Chem 26, 73–82 (2000). https://doi.org/10.1007/BF02731947
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DOI: https://doi.org/10.1007/BF02731947