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Hyper- and Hypobaric Processing of T1-Ca-Ba-Cu-O Superconductors

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Abstract

Tl-based superconductors of initial composition Tl:Ca:Ba:Cu equal to 2:2:2:3 and 1:3:1:3 were heated in oxygen at pressures of 104 to 6 x 105 Pa. The 2:2:2:3 composition formed primarily the 2-layer superconductor with zero resistance from 77 to 104 K. The 1:3:1:3 composition formed nearly phase pure 3-layer superconductor with a maximum zero resistance temperature of 120 K. Application of hyperbaric pressure influenced phase purities and transition temperatures slightly; phase purities decreased significantly with application of hypobaric pressures.

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Authors and Affiliations

  1. Argonne National Laboratory, Argonne, IL, 60439, USA

    K. C. Goretta, J. L. Routbort, Donglu Shi, J. G. Chen, Ming Xu & M. C. Hash

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  1. K. C. Goretta
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  2. J. L. Routbort
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  3. Donglu Shi
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  4. J. G. Chen
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  5. Ming Xu
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  6. M. C. Hash
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Goretta, K.C., Routbort, J.L., Shi, D. et al. Hyper- and Hypobaric Processing of T1-Ca-Ba-Cu-O Superconductors. MRS Online Proceedings Library 169, 365–368 (1989). https://doi.org/10.1557/PROC-169-365

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  • DOI: https://doi.org/10.1557/PROC-169-365

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