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Electrical impedance and electric modulus approach of double perovskite Pr2ZnZrO6 ceramics

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Abstract

The polycrystalline praseodymium zinc zirconate Pr2ZnZrO6 (PZZO) is synthesized at 1,150 °C by means of solid state reaction technique. X-ray structural analysis confirmed the formation of a single phase monoclinic structure at room temperature. The nonzero intercept in the Nyquist plot indicates the presence of an arc for frequency higher than the maximum frequency measured (1 MHz). Comparative study of the impedance and modulus plot confirm the contribution from grain and grain-boundary and grain-boundary contribution dominates in the material. The activation energy of the compound calculated from imaginary part of impedance plot is found to be 0.442 eV which suggests that the polaron hopping is responsible for conduction mechanism in PZZO. Semiconducting behavior of the material is observed. Summerfield scaling shows a quite satisfying overlap of the data at different temperatures on a single master curve.

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Acknowledgments

This work is financially supported by Defence Research Development Organisation, Government of India, New Delhi.

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Authors and Affiliations

  1. Department of Physics, National Institute of Technology, Patna, Patna, 800 005, India

    Dev K. Mahato

  2. Department of Physics, Bose Institute, 93/1, Acharya Prafulla Chandra Road, Kolkata, 700 009, India

    T. P. Sinha

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  1. Dev K. Mahato
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  2. T. P. Sinha
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Correspondence to Dev K. Mahato.

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Mahato, D.K., Sinha, T.P. Electrical impedance and electric modulus approach of double perovskite Pr2ZnZrO6 ceramics. J Mater Sci: Mater Electron 24, 4399–4405 (2013). https://doi.org/10.1007/s10854-013-1416-7

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  • DOI: https://doi.org/10.1007/s10854-013-1416-7

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