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Remanent fields and critical currents in Tl2 Ba2Ca2Cu3Ox ceramic

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Abstract

The temperature and magnetic-field dependences of the remanent magnetization have been determined from far-field measurements for thallium ceramic samples. The current flow that gives rise to the observed magnetization is intragranular. The results are consistent with flux-creep-controlled transport with a distance between pinning centers of ∼- 1/2/μm. Using near-field measurements, the superconducting properties are found to be heterogeneous on a scale of ≫ 1 mm. Magnetic domains have been induced by pplying spatial variation in the applied field.

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Authors and Affiliations

  1. Rockwell Science Center, 1049 Camino Dos Rios, 91360, Thousand Oaks, CA, USA

    R. E. DeWames, P. E. D. Morgan, J. J. Ratto, J. R. Porter, W. F. Hall, D. B. Marshall & I. B. Goldberg

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  1. R. E. DeWames
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  2. P. E. D. Morgan
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  3. J. J. Ratto
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  4. J. R. Porter
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  5. W. F. Hall
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  6. D. B. Marshall
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  7. I. B. Goldberg
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DeWames, R.E., Morgan, P.E.D., Ratto, J.J. et al. Remanent fields and critical currents in Tl2 Ba2Ca2Cu3Ox ceramic. Appl. Phys. A 49, 325–329 (1989). https://doi.org/10.1007/BF00616862

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  • DOI: https://doi.org/10.1007/BF00616862

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