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Thin polyimide protective coating for HTS-thin film devices

  • HTS—Synthesis, Substitution Studies, Film Preparation
  • Published:
Czechoslovak Journal of Physics Aims and scope

Abstract

To protect the HTS-thin film microwave-frequency passive and active devices from traces of acids and humidity in the atmosphere, the oxide superconductors must be passivated. Electric parameters of the films and Q-factor of the resonators have been measured before and after passivation cycle, and thermocycles. The relative decrease of the critical current density for different quality HTS films after passivation treatment is explained by water penetration between grains during imidization cycle.

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Authors and Affiliations

  1. Institute of Electronics, Bulgarian Academy of Sciences, Tzarigradsko Chaussee 72, 1784, Sofia, Bulgaria

    T. Donchev, T. Nurgaliev, V. Tsaneva, R. Chakalova & A. Spasov

  2. Central Laboratory of Photoprocesses, Bulgarian Academy of Sciences, G. Bontchev str., bl. 109, 1040, Sofia, Bulgaria

    G. Danev & E. Spassova

Authors
  1. T. Donchev
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  2. G. Danev
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  3. T. Nurgaliev
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  4. E. Spassova
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  5. V. Tsaneva
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  6. R. Chakalova
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  7. A. Spasov
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Additional information

This work was supported by CIPA-CT94-0193 and National Science Fund Contract Φ 515

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Donchev, T., Danev, G., Nurgaliev, T. et al. Thin polyimide protective coating for HTS-thin film devices. Czech J Phys 46 (Suppl 3), 1525–1526 (1996). https://doi.org/10.1007/BF02562877

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  • DOI: https://doi.org/10.1007/BF02562877

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