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Significant Improvement in Superconductivity by Substituting Pb at Bi-site in Bi2−x Pb x Sr2CaCu2O8 with x=0.0 to 0.40

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Abstract

Here we report the synthesis and superconducting properties of bulk Bi2−x Pb x Sr2CaCu2O8 (x=0.0 to 0.4) compound. Though the superconducting transition temperature (T c) decreases marginally, the critical current density under magnetic field J c(H) increases with Pb content. An optimization is observed for x=0.16 with J c(H) (7.894×103 A/cm2) that is nearly doubled in comparison to the pristine compound. It seems that controlled substitution of Pb at Bi-site in bulk Bi-2212 (Bi2Sr2CaCu2O8) system can enhance the superconducting critical parameters. These results are explained on the basis of possible improved inter- and intra-granular properties with Pb substitution in Bi2−x Pb x Sr2CaCu2O8 system.

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Authors and Affiliations

  1. National Physical Laboratory (CSIR), Dr. K.S. Krishnan Marg, New Delhi, 110012, India

    Jagdish Kumar, H. Kishan & V. P. S. Awana

  2. Himachal Pradesh University, Shimla, 171005, HP, India

    Jagdish Kumar & P. K. Ahluwalia

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  1. Jagdish Kumar
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  2. P. K. Ahluwalia
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  3. H. Kishan
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  4. V. P. S. Awana
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Correspondence to V. P. S. Awana.

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Kumar, J., Ahluwalia, P.K., Kishan, H. et al. Significant Improvement in Superconductivity by Substituting Pb at Bi-site in Bi2−x Pb x Sr2CaCu2O8 with x=0.0 to 0.40. J Supercond Nov Magn 23, 493–499 (2010). https://doi.org/10.1007/s10948-009-0622-2

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  • DOI: https://doi.org/10.1007/s10948-009-0622-2

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