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Superconductivity of barium-doped Bi2Sr2CaCu2O y

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Abstract

Sintered ceramic samples of Bi2Sr2−x Ba x CaCu2Oy with nominal barium fraction 0≤x≤0.3 have been prepared by the solid-state reaction method. WDS studies verified that barium enters the superconducting phase. For slowly cooled samples, the midpointT c of the superconducting transition is significantly increased by barium doping, whereas for quenched samplesT c is little affected. The increase ofT c with increasing barium fraction is consistent with a decrease in the hole concentration in the superconducting layers.

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Author notes

  1. Beifang Yang

    Present address: Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, Anhui, Peoples Republic of China

Authors and Affiliations

  1. Department of Physics, University of Toronto, M5S 1A7, Toronto, Ontario, Canada

    Beifang Yang & Airton Martin

  2. Department of Physics and Scarborough College, University of Toronto, M5S 1A7, Toronto, Ontario, Canada

    M. J. G. Lee & J. M. Perz

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  1. Beifang Yang
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  2. Airton Martin
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  3. M. J. G. Lee
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  4. J. M. Perz
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Yang, B., Martin, A., Lee, M.J.G. et al. Superconductivity of barium-doped Bi2Sr2CaCu2O y . J Supercond 9, 161–165 (1996). https://doi.org/10.1007/BF00728296

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  • DOI: https://doi.org/10.1007/BF00728296

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