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Critical Current Density of the YBa2Cu3O7-δ Superconductor as Affected by Microstructuralxontrol

  • S. Jin (a1), R. C Sherwood (a1), T. H. Tiefel (a1), R. B. van Dover (a1), G. W. Kammlott (a1), M. E. Davis (a1), R. A. Fastnacht (a1), S. Nakahara (a1), M. F. Yan (a1) and D. W. Johnson (a1)...

Abstract

The recent discovery of the YBa2Cu3O7-δ type high Tc superconductors stimulated worldwide R&D interest in this field. However, the relatively low critical current density (Jc) in the polycrystalline, bulk superconductors (as well as its significant deterioration in weak magnetic fields) has been a major roadblock to the rapid technical advancement toward applications. In this paper, we investigated the effect of processing and microstructural control on Jc of the superconductor. Improved Jc values of -3100 A/cm2 at 77K with somewhat reduced field dependence have been obtained through appropriate microstructural modifications.

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[12] Jin, S., Tiefel, T. H., Sherwood, R. C., van Dover, R. B., Kammlott, G. W., Davis, M. E., and Fastnacht, R. A. (to be published).

Critical Current Density of the YBa2Cu3O7-δ Superconductor as Affected by Microstructuralxontrol

  • S. Jin (a1), R. C Sherwood (a1), T. H. Tiefel (a1), R. B. van Dover (a1), G. W. Kammlott (a1), M. E. Davis (a1), R. A. Fastnacht (a1), S. Nakahara (a1), M. F. Yan (a1) and D. W. Johnson (a1)...

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