Stability of Hg-based high-Tc superconducting thin films

T. Aytug, B. W. Kang, S. L. Yan, Y. Y. Xie, J. Z. Wu

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Stability of Hg-based superconducting thin films has been studied in air, acetone, alcohol, water, and thermal cycling. Tc, Jc, and surface micro structure s were analyzed as functions of exposure period. In dry air, fully reacted samples did not show degradation for a period of over one year, while samples which were not fully reacted due to air contamination or other reasons degraded within a few weeks. In humid air, samples were totally degraded within a few minutes. It has been found that the films degraded considerably in alcohol and acetone after they were immersed for a few hours, while this degradation was much severe in water. The mechanism of sample degradation has been discussed as well.

Original languageEnglish
Pages (from-to)117-127
Number of pages11
JournalPhysica C: Superconductivity and its Applications
Volume307
Issue number1-2
DOIs
StatePublished - Oct 1 1998
Externally publishedYes

Funding

We thank Dr. F. Xin and A.A. Gapud for their helpful discussions and H.G. Khym for reviewing this manuscript. This work is supported in part by USAFOSR Grant No. F49620-96-1-0358, NSF Grant No. DMR-9632279 and NSF EPSCoR fund.

Keywords

  • Hg-1212
  • Hg-1223
  • High-temperature superconductivity
  • Stability

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