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Preparation dependent superconductivity in TlCaBa2Cu3O7.5±d above 100 K

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Zeitschrift für Physik B Condensed Matter

Abstract

Different heat treatment procedures were applied during sample preparation, which resulted in different superconducting properties in samples of the same nominal composition, TlCaBa2Cu3O7.5±d . This manifests itself in different critical temperatures: 104 K, 107 K and 93 K. The highestT c belongs to the best-crystallized samples in which the tetragonal Tl2Ca1Ba2Cu2O8±d phase is responsible for the superconductivity. The effect of heat treatments is reflected in the structural and magnetic properties as well.

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Authors and Affiliations

  1. Department for Low Temperature Physics, Roland Eötvös University, Puskun u. 5-7, H-1088, Budapest, Hungary

    I. Kirschner, Gy. Kovács, T. Porjesz, G. Zsolt & T. Kármán

  2. Central Research Institute for Chemistry, Pusztaszeri ut 59/67, H-1025, Budapest, Hungary

    I. Halász

  3. Central Research and Design Institute for Silicate Industry, Bécsi ut 126/128, H-1034, Budapest, Hungary

    T. Träger

  4. Central Research Institute for Physics, Konkoly Thege ut 29-33, H-1121, Budapest, Hungary

    J. Tóth

Authors
  1. I. Kirschner
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  2. I. Halász
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  3. T. Träger
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  4. J. Tóth
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  5. Gy. Kovács
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  6. T. Porjesz
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  7. G. Zsolt
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  8. T. Kármán
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Kirschner, I., Halász, I., Träger, T. et al. Preparation dependent superconductivity in TlCaBa2Cu3O7.5±d above 100 K. Z. Physik B - Condensed Matter 73, 293–297 (1988). https://doi.org/10.1007/BF01314265

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  • DOI: https://doi.org/10.1007/BF01314265

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