Development of YBa/sub 2/Cu/sub 3/O/sub y/ tape by using inclined substrate method

Abstract

YBa/sub 2/Cu/sub 3/O/sub y/ (YBCO) wire has higher critical current density (J/sub c/) and less degradation in J/sub c/ upon application of a magnetic field than (Bi,Pb)/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub x/ (Bi2223) powder-in-tube wire. It has good potential for use as a high temperature superconducting (HTS) wire following Bi2223. For many years, we have been studying a process to form biaxially aligned YBCO film on metal-based tape by the inclined substrate deposition (ISD). To date, we have succeeded in fabricating a 6 m-long YBCO wire by a continuous process of the ISD method. We have also investigated performance of the fabricated YBCO wire and the advantages of YBCO wire in its applications to rectifier-type fault current limiter (FCL) and HTS cable.