Abstract
A mathematical modeling of mobility of Ag + ion in AgI is presented. In the model, regime is space charge polarized initially by applying a fixed d.c. field of ∼0.5 V across the sample, sandwiched between two electronically conducting graphite electrodes. The depolarization potential is recorded at various isothermal conditions in the temper- ature range 300-535 K. By considering open-circuit condition (where the sum of all current densities, i.e., drift current density, trapped current density, and displacement current density, is vanished), ionic drift- and trap-modulated mobilities are modeled. Result obtained through this model is compared with the ionic mobility, measured by conven- tional transient ionic current technique in the same temperature range.
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