Fabrication of biaxially oriented YBCO on (00l) biaxially oriented yttria-stabilized-zirconia on polycrystalline substrates

摘要

Ion-assisted, ion-beam sputter deposition is used to obtain (00l) biaxially oriented films of cubic yttria-stabilized-zirconia (YSZ) on polycrystalline metal substrates. Yttrium-barium-copper-oxide (YBCO) is then heteroepitaxially-pulse-laser deposited onto the YSZ. Phi scans of the films show the full-width-half maxima of the YSZ (202) and the YBCO(103) reflections to be 14(degree) and 10(degree) respectively. Our best dc transport critical current density measurement for the YBCO is 800,000 A/cm(sup 2) at 75K and 0T. At 75K, the total dc transport current in a 1 cm wide YBCO film is 23 A.