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High field conduction and dielectric relaxation in glasses

Journal of Non-Crystalline Solids
Publication Date
DOI: 10.1016/0022-3093(80)90431-7


Abstract A modified Poole Frenkel theory for both ionic and polaronic conduction in glasses is elaborated. It is assumed that the ions are held in broad Coulombic potential basins much larger than the ion jump distance and DC conduction is limited by jumps between such basins. The effective dielectric constant for the Coulomb field is shown to be mid-way between the measured static and high-frequency values. Resistance-capacitance effects between basins account for the long time constants and these are reduced at high fields.

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