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Stability of HgBa2CaCu2Ox Superconducting Thin Films in Long-Term Environmental Exposure

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Abstract

Highly a-axis oriented HgBa2CaCu2Ox thin films deposited on LaAlO3 substrates have been exposed to air at room temperature for a period of 400 days. The properties of the exposed sample have been studied by electrical and magnetic measurements, X- ray diffractometry (XRD), scanning electron microscopy (SEM), and energy dispersive X-ray spectrometry (EDX). No substancial change of superconducting transition temperature or the structure was observed, but c-peaks reappeared after O2 re-annealing at 350°C for 16 h.

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Authors and Affiliations

  1. Department of Physics, Materials Physics, Royal Institute of Technology, S-100 44, Stockholm, Sweden

    S. H. Yun, A. Brazdeikis & U. O. Karlsson

  2. Department of Inorganic Chemistry, Arrhenius Laboratory, Stockholm University, S-10691, Stockholm, Sweden

    I. Bryntse

  3. Department of Physics & Astronomy, University of Kansas, Lawrence, KS, 66045

    J. Z. Wu

Authors
  1. S. H. Yun
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  2. A. Brazdeikis
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  3. I. Bryntse
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  4. J. Z. Wu
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  5. U. O. Karlsson
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Yun, S.H., Brazdeikis, A., Bryntse, I. et al. Stability of HgBa2CaCu2Ox Superconducting Thin Films in Long-Term Environmental Exposure. Journal of Superconductivity 11, 37–38 (1998). https://doi.org/10.1023/A:1022665409129

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  • DOI: https://doi.org/10.1023/A:1022665409129

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