ELONGATE SUPERCONDUCTOR ELEMENTS COMPRISING OXIDE SUPERCONDUCTORS, SUPERCONDUCTING COILS AND METHODS OF MAKING SUCH ELEMENTS

摘要

The present invention provides an elongate superconductor wiring element having, as seen in section, oxide superconductor material regions in each of which the c-axes of the oxide superconductor crystals are aligned with each other and are transverse to the longitudinal axis of the element. To reduce the dependence of critical current density on angular position of the element relative to a magnetic field, there are a plurality of regions whose alignment directions of the c-axes are different (as between different ones of the regions) so that the wiring element comprises a plurality of regions having respectively different c-axis alignment directions.