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Collective pinning behavior of intergranular Josephson vortices and the intergranular irreversibility line of high-T c superconducting ceramics

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Abstract

The supercurrent-transport properties of YBa2Cu3O∼7 (Y∶123) polycrystalline bulk sintered samples with random grain orientation were thoroughly investigated. The dissipation process in these materials occurs due to intergranular flux motion, rather than by weak-link quenching. It was found that the model which takes into consideration collective creep of intergranular vortices is self-consistent in describing the low-voltage-level current-voltage characteristics and the intergranular irreversibility line of high-T c superconducting ceramics.

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Authors and Affiliations

  1. Institut für Festkörperphysik, Technische Hochschule Darmstadt, Hochschulstr. 8, D-64289, Darmstadt, Germany

    L. Miu

  2. Institute of Physics and Technology of Materials, P.O. Box MG-7, Bucharest, Romania

    L. Miu

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  1. L. Miu
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Miu, L. Collective pinning behavior of intergranular Josephson vortices and the intergranular irreversibility line of high-T c superconducting ceramics. J Supercond 8, 143–146 (1995). https://doi.org/10.1007/BF00732256

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  • DOI: https://doi.org/10.1007/BF00732256

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