DocumentCode :
1240705
Title :
Orientation of Ce-Y-Zr-O films deposited by reactive sputtering onto oxidized NiCr-tapes and Ni films
Author :
Wozniak, U. ; Linker, G. ; Geerk, J.
Author_Institution :
Forschungszentrum Karlsruhe Inst. fur Festkorperphysik, Germany
Volume :
13
Issue :
2
fYear :
2003
fDate :
6/1/2003 12:00:00 AM
Firstpage :
2547
Lastpage :
2550
Abstract :
The growth of Ce-Y-Zr-O (CYZ) buffer layers for YBa2Cu3O7-δ deposition on textured Ni-tapes was studied under idealized conditions on [100]-SrTiO3 (STO) single crystals and epitaxial Ni films and under real conditions on textured NiCr-tapes. The metallic substrates were epitaxially surface oxidized prior to deposition. The subsequent CYZ-layer was produced by rf sputtering employing combined planar and cylindrical targets and was characterized by x-ray diffraction (XRD) and Rutherford Backscattering. Films sputtered on STO-single crystals were 100 nm thick, had lattice constants between 0.5191 and 0.5443 nm, and out-of-plane mosaic spreads between 0.6 and 3.2°. Best films grown on epitaxially surface oxidized Ni films and NiCr-tapes had lattice constants of 0.5220 and 0.5226 nm, and out-of-plane mosaic spreads of 2.3° and 6.8°, respectively and were highly [100]-orientated (> 95%).
Keywords :
Rutherford backscattering; X-ray diffraction; barium compounds; cerium compounds; chromium alloys; high-temperature superconductors; lattice constants; mosaic structure; nickel; nickel alloys; sputtered coatings; superconducting tapes; superconducting thin films; yttrium compounds; zirconium compounds; 100 nm; Ce-Y-Zr-O; Ce-Y-Zr-O films; Ni; Ni films; NiCr; Rutherford backscattering; SrTiO3; YBa2Cu3O7-δ; YBa2Cu3O7-δ deposition; high temperature superconductor; idealized conditions; lattice constants; metallic substrates; out-of-plane mosaic spreads; oxidized NiCr-tapes; reactive sputtering; x-ray diffraction; Argon; Atmosphere; Buffer layers; Crystals; Epitaxial growth; Lattices; Oxidation; Sputtering; Substrates; Temperature distribution;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2003.811844
Filename :
1212135
Link To Document :
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