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Relaxation studies of spray deposited Bi2Co0.1V0.9O5.35 solid electrolyte thin films on stainless steel substrate

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Abstract

The room temperature-stabilized γ-phase ion conducting Bi2Co0.1V0.9O5.35 thin film was deposited by spray pyrolysis on stainless steel substrate. The intra-grain and grain interior charge transfer was confirmed in these films with impedance spectroscopic measurements done from 1 Hz to 10 MHz in the temperature range 550 K to 741 K. Impedance data further revealed non-Debye kind of relaxation dispersion in the film. The relaxation frequency ranges from 10 to 100 Hz, which predicts long range jumping of the oxygen ions with chemical diffusivity. The Arrhenius plots for relaxation frequency and grain boundary conductivity were found to have same activation energy revealing grain boundary dominant conduction. The effect of polycrystallinity on relaxation dispersion is investigated for the first time on Bi2Co0.1V0.9O5.35 thin films using impedance formalism.

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Acknowledgment

Authors are thankful to Dr. C.A. Batty, Scientist BARC Mumbai for useful discussions. Authors are grateful to CSIR for financial support. They are also grateful to the Honorable chancellor Shri. Sanjay D. Patil for his keen interest in this research.

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Authors and Affiliations

  1. Department of Physics, Shivaji University, Kolhapur, 416004, Maharashtra, India

    Rajeev Joshi & S. H. Pawar

  2. Chemistry Division, Bhabha Atomic Research Centre, Mumbai, 400085, Maharashtra, India

    R. Mishra

  3. Department of Technology, D.Y Patil University, Kolhapur, 416006, Maharashtra, India

    S. H. Pawar

Authors
  1. Rajeev Joshi
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  2. R. Mishra
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  3. S. H. Pawar
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Correspondence to S. H. Pawar.

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Joshi, R., Mishra, R. & Pawar, S.H. Relaxation studies of spray deposited Bi2Co0.1V0.9O5.35 solid electrolyte thin films on stainless steel substrate. Ionics 15, 453–458 (2009). https://doi.org/10.1007/s11581-008-0295-z

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  • DOI: https://doi.org/10.1007/s11581-008-0295-z

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