Investigation into the Electrical Properties of the PbSe +PbSeO_3 Two-Phase Composite by Impedance Spectroscopy

摘要

The electrical properties of the PbSe +PbSeO_3 two-phase polycrystalline composite are investigated by impedance spectroscopy in the temperature range 293-393 K.The frequency dependences of the ohmic resistance and the reactance of the samples under investigation are measured at different temperatures.The results obtained are used to construct the loci of the impedance in the ohmic resistance (Z)and reactance (Z')coordinates of the total impedance Z.The activation energies for all individual components contributing to electrical conduction in the composite are determined by impedance spectroscopy.An equivalent electric circuit that represents the integral electric response of all individual components of the sample is proposed.