Impedance spectroscopy study of Pb2P2O7 compound

• DOI: 10.1007/s11581-011-0540-8
• Publication Date: 2011-03-30T21:41:28Z
• Authors: Haibado Mahamoud; Bassem Louati; Faouzi Hlel; Kamel Guidara
• Keywords: Arrhenius plot; Triclinic crystal system; Diffractometer; Nyquist plot

The lead pyrophosphate, Pb2P2O7, compound was prepared by conventional solid-state reaction and identified by X-ray powder diffractometer. Pb2P2O7 has a triclinic structure whose electrical properties were studied using impedance spectroscopy technique. Both impedance and modulus analysis exhibit the grain and grain boundary contribution to the electrical response of the sample. The temperature dependence of the bulk and grain boundary conductivity were found to obey the Arrhenius law with activation energies Eg = 0.66 eV and Egb = 0.67 eV, respectively. The scaling behavior of the imaginary part of the complex impedance suggests that the relaxation describes the same mechanism at various temperatures.