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Complex impedance analysis of Sr(NO3)2 and Sr(NO3)2:γ-Al2O3 dispersed solid electrolyte systems

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Abstract

Complex impedance spectroscopic studies were carried out on Sr(NO3)2 and Sr(NO3)2:γ-Al2O3 dispersed solid electrolyte systems (DSES) in the temperature range 300 to 560° C and the frequency range 100 Hz to 1 MHz. Mole percentage of the dispersoid γ-Al2O3 was varied from 17.2 to 34.2. The d.c. conductivity estimated from the Cole-Cole plots was found to increase with the mole percentage of the dispersoid. Dissipation was found to vary in a manner similar to the variation of conductivity with temperature. A.c. conductivity was found to be frequency dependent in the extrinsic region, but frequency independent in the intrinsic region. The enhanced conductivity in DSES was attributed to the formation of a space-charge layer between the host material and the dispersoid.

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Author notes

  1. K. Shahi

    Present address: Materials Science Programme, Indian Institute of Technology, 208 016, Kanpur, India

Authors and Affiliations

  1. Department of Physics, University College of Science, Osmania University, 500 007, Hyderabad, India

    S. Narender Reddy, A. Sadananda Chary, K. Shahi & T. Chiranjivi

Authors
  1. S. Narender Reddy
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  2. A. Sadananda Chary
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  3. K. Shahi
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  4. T. Chiranjivi
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Reddy, S.N., Chary, A.S., Shahi, K. et al. Complex impedance analysis of Sr(NO3)2 and Sr(NO3)2:γ-Al2O3 dispersed solid electrolyte systems. J Mater Sci: Mater Electron 1, 153–158 (1990). https://doi.org/10.1007/BF00694736

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  • DOI: https://doi.org/10.1007/BF00694736

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