| 简介 |
Rare-earth-Ba—Cu—O superconductors having improved critical current density are described, as are methods of making same. These superconductors comprise a drop in Jc of less than a factor of about 7 at a temperature of between about 30K to about 77K, and at a magnetic field of about 1 Tesla, when the magnetic field is applied normal to the surface of the superconductor, as compared to a Jc in the presence of no magnetic field. These superconductors, when a magnetic field is applied perpendicular to the HTS surface have a peak Jc that is about 50-90%, and when a magnetic field is applied in any orientation with respect to the HTS surface have a Jc value that is at least about 50%, of the peak Jc that exists when the magnetic field is applied parallel to the surface of the superconductor. |
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