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Superconductivity above 100 K in multi-phase Y−Ba−Cu−O

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Zeitschrift für Physik B Condensed Matter

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Abstract

We report the synthesis, characterization and superconducting temperature of high-temperature superconducting Y0.3Ba0.7CuO3, Y0.4Ba0.6CuO3 and Y1.2Ba0.8CuO4. The volume fraction of the superconducting phase is estimated to be of the order of 10%.

HighT c superconductivity withT c -onsets up to 125 K (midpoint 102 K, zero resistance: 90 K) is observed in multi-phase Y−Ba−Cu−O oxygen defect compounds with the nominal composition of Y1.2Ba0.8CuO4−y (0≦y≦0.4).

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Authors and Affiliations

  1. Institut für Nukleare Festkörperphysik, Kernforschungszentrum Karlsruhe, Postfach 3640, D-7500, Karlsruhe, Federal Republic of Germany

    C. Politis & J. Geerk

  2. Institut für Technische Physik, Kernforschungszentrum Karlsruhe, Postfach 3640, D-7500, Karlsruhe, Federal Republic of Germany

    M. Dietrich & B. Obst

  3. Department of Electrical Engineering and Computer Sciences, University of California, San Diego, 92093, La Jolla, CA

    H. L. Luo

Authors
  1. C. Politis
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  2. J. Geerk
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  3. M. Dietrich
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  4. B. Obst
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  5. H. L. Luo
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Politis, C., Geerk, J., Dietrich, M. et al. Superconductivity above 100 K in multi-phase Y−Ba−Cu−O. Z. Physik B - Condensed Matter 66, 279–282 (1987). https://doi.org/10.1007/BF01305417

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  • DOI: https://doi.org/10.1007/BF01305417

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