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Melt-textured YBaCuO with High Trapped Fields up to 1.3 T at 77 K

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Abstract

CeO2-doped YBaCuO monoliths synthesized with a top-seeded melt growth process in a conventional box furnace exhibited values of trapped magnetic field of up to 1.33 T at 77 K. To our knowledge, this is the highest value of trapped field reported for a melt-textured YBaCuO monolith. A suitable temperature profile and the use of high-density Y2BaCuO5 substrates led to reproducible single-domain crack-free samples investigated by optical and scanning electron microscopy and trapped field measurements. The zero-field-cooled levitation forces at 77 K of standard samples amounted to 70–83 N. A transport critical current density of up to 1.3 × 105 A/cm2 in self field at 77 K was obtained.

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Authors and Affiliations

  1. Zentrum für Funktionwerkstoffe Göttingen GmbH, Windausweg 2, Göttingen, 37073, Germany

    H. Walter, A. Leenders & H. C. Freyhardt

  2. Institut für Materialphysik, Universität Göttinger, Hospitalstrasse 3-7, Göttingen, 37073, Germany

    M. P. Delamare, B. Bringmann, A. Leenders & H. C. Freyhardt

Authors
  1. H. Walter
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  2. M. P. Delamare
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  3. B. Bringmann
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  4. A. Leenders
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  5. H. C. Freyhardt
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Walter, H., Delamare, M.P., Bringmann, B. et al. Melt-textured YBaCuO with High Trapped Fields up to 1.3 T at 77 K. Journal of Materials Research 15, 1231–1234 (2000). https://doi.org/10.1557/JMR.2000.0175

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  • DOI: https://doi.org/10.1557/JMR.2000.0175

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