Structural, thermal and electrical characterization of NdLiMo2O8 electroceramics, using impedance spectroscopy

We report electrical property of a polycrystalline NdLiMo2O8 ceramics using complex impedance analysis. The material shows temperature dependent electrical relaxation phenomena. The d.c. conductivity shows typical Arrhenius behavior, when observed as a function of temperature. The a.c. conductivity is found to obey Jonscher's universal power law. The material was prepared in powder form by a standard solid-state reaction technique. Material formation and crystallinity have been confirmed by X-ray diffraction studies. Impedance measurements have been performed over a range of temperatures and frequencies. The results have been analyzed in the complex plane formalism and suitable equivalent circuits have been proposed in different regions. The role of bulk and grain boundary effect in the overall electrical conduction process is discussed with proper justification.

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► We report electrical property of NdLiMo2O8 electroceramic using impedance analysis.
► Systematic study/chemical reaction for formation of the material was carried out.
► The electrical process has been modeled in terms of equivalent electrical circuits.
► d.c. conductivity is mainly due to Arrhenius type thermally activated process.
► a.c. conductivity is found to follow Jonscher's Universal power law.