Abstract
The YBa 2Cu 3O 7− x (YBCO) superconducting films deposited on the polycrystal metallic substrates by using the rolling assisted biaxially textured substrates (RABiTS) method is reported in this paper. The sharp cube texture in Ni was produced by cold-rolling and recrystallization. The CeO 2 and yttria-stabilized-zirconia (YSZ) films were fabricated by magnetron sputtering technique using plane target. Ar and H 2 were used as sputtering gas while CeO 2 film was deposited. If the pressure of hydrogen is appropriate, NiO can be inhibited while CeO 2 is stable. The full width half maximum (FWHM) of the φ-scan of CeO 2 (220) is 11°, showing a good in-plane orientation. Using Ar and O 2 sputtering gas YSZ film was deposited. The FWHM of the φ-scan of YSZ (220) is 15°. The conditions of both CeO 2 and YSZ films grown on Ni substrates are more severe than those on single crystal substrates. YBCO film was deposited on YSZ/CeO 2/Ni by using cylinder target in a dc magnetron sputtering system. The transport J c (77 K, 0 T) was 6×10 5 A/cm 2. The microstructure of the deposited films was observed by scanning electron microscopy (SEM) and Auger electron spectrum (AES).
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