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Dielectric, Impedance and Conduction Behavior of Double Perovskite Pr2CuTiO6 Ceramics

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Abstract

Polycrystalline Pr2CuTiO6 (PCT) ceramics exhibits dielectric, impedance and modulus characteristics as a possible material for microelectronic devices. PCT was synthesized through the standard solid-state reaction method. The dielectric permittivity, impedance and electric modulus of PCT have been studied in a wide frequency (100 Hz–1 MHz) and temperature (303–593 K) range. Structural analysis of the compound revealed a monoclinic phase at room temperature. Complex impedance Cole–Cole plots are used to interpret the relaxation mechanism, and grain boundary contributions towards conductivity have been estimated. From electrical modulus formalism polarization and conductivity relaxation behavior in PCT have been discussed. Normalization of the imaginary part of impedance (Z″) and the normalized imaginary part of modulus (M″) indicates contributions from both long-range and localized relaxation effects. The grain boundary resistance along with their relaxation frequencies are plotted in the form of an Arrhenius plot with activation energy 0.45 eV and 0.46 eV, respectively. The ac conductivity mechanism has been discussed.

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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. Dielectric, Impedance and Conduction Behavior of Double Perovskite Pr2CuTiO6 Ceramics. J. Electron. Mater. 46, 107–115 (2017). https://doi.org/10.1007/s11664-016-4842-5

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  • DOI: https://doi.org/10.1007/s11664-016-4842-5

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