Correction of the electrode polarization and ionic conductance effects in the measurements of permittivity and loss of the dielectric materials

Dielectric materials are supposed to possess very high resistance (infinite in an ideal case) so that there is no direct current loss in the capacitors using these materials. However, despite best efforts, dielectric materials possess some ionic impurities. When an electrical signal is applied on these materials through electrodes, these ions move to electrodes and mask them. This phenomenon is called electrodes polarization. Electrode polarization phenomenon prohibit to determine correct values of the dielectric parameters of such materials particularly in the low frequency region (below similar to 10-100 kHz). Here, a model has been used to successfully remove electrode polarization effect from the dielectric data and thereby resulting measurement of true characteristic parameters of the materials. Success of the model has been demonstrated by exhibiting appropriate examples of the permittivity and loss data on the materials exhibiting wide variety of molecular relaxations mechanisms.