Dynamic current-voltage characteristics of ionically conducting solids

Dynamic current-voltage (DCV) characteristics of materials with non-equilib rium ionic conduction are investigated. Theoretical j-V dependence taking i nto account non-equilibrium conduction of two types of ions as well as intr insic (ohmic) conduction is presented. A computer program fitting this depe ndence to experimental results has been developed. The fitting procedure al lows the determination of mobility and concentration of both types of ions as well as the intrinsic conductivity of investigated material. An example of these calculations for SiO2 xerogels is presented. (C) 1999 Elsevier Sci ence B.V. All rights reserved.