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AC electrical properties study and equivalent circuit of a monovalent mixed pyrophosphate

Author(s): M.Megdiche*, H.Mahmoud, B.Louati, F.Hlel, K.Guidara

NaAgPbP2O7 was prepared with a solid state reaction. The electrical properties were investigated by using impedance measurements in the frequency range from 200Hz to 5MHz with the TEGAM3550ALF automatic bridge monitored by a microcomputer between 581K and 703K. The Z and Z versus frequency plots are well fitted to an equivalent circuit model. The conductivity data obey the universal power law. The conductivity in the material is due to the hopping of monovalent ions parallel to (001) plane.

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