Dielectric absorption, current-voltage characteristics and charge decay in PMMA/BaTiO_3 composites

摘要

It is well known that the absorption current (i) which flows in an organic polymer and amorphous materials on application of an external electric field (E) depends on a dipolar orientation in the direction of the field , free charge accumulation at structural/ electrical inhomogeneities and space charge near the electrodes [1-3].