Abstract
Aluminium-silicon oxide-aluminium capacitors have been subjected to step voltage signals giving electric field strengths across the oxide film of up to 150 V/μ. The slow charge and discharge current-time responses have been recorded and analysed in terms of a Debye type polarization model with a normal distribution of activation energies. It is shown that the current-time response, which is of the approximate form i = at - b , can be described in terms of this model for a limited time interval, for the whole range of field strengths used. Assuming that the slow polarization process in silicon oxide actually corresponds to the model used, a number of physical quantities characterizing the polarization process is evaluated.
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