High critical current density YB+CU,O,-~ (YBCO) tapes were fabricated by epitaxial dep on roiling-assisted-biaxially-textured-substrates (RABiTS). The RABiTS technique uses well established, industrially scaleable, thermomechanical processes to impart a strong biaxial texture to a base metal. This is followed by vapor deposition of epitaxial buffer layers to yield chemically and structurally compatible surfaces. Epitaxial YBCO films grown on such substrates have critical current densities

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... ching lo6 Ncm' at 77K in zero-field and have field dependences similar to epitaxial films on single crystal ceramic substrates. Deposited conductors made using this technique offer a potential route for the fabrication of long lengths of high J, wire capable of carrying high currents in high magnetic fields and at elevated \ temperatures.