Additional CeO2 Buffer Layer Improves Performance of Superconducting Tape
نویسندگان
چکیده
منابع مشابه
Raman study of CeO2 texture as a buffer layer in the CeO2/La2Zr2O7/Ni architecture for coated conductors.
The CeO(2)/La(2)Zr(2)O(7)/Ni piled-up structure is a very promising architecture for YBa(2)Cu(3)O(7) (YBCO) coated conductors. We have grown YBCO/CeO(2)/LZO/Ni epitaxial structures by metalorganic decomposition (MOD) and metalorganic chemical vapor deposition (MOCVD) methods. The crystallographic quality of the CeO(2) layer is not well determined by conventional X-ray diffraction (XRD) due to t...
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AbstractIn this study, the stress analysis of YBCO/CeO2/YSZ/CeO2/Ni architextured materials under cryogenic conditions was carried out for coated conductor applications. YBCO/CeO2/YSZ/CeO2 multilayer films were fabricated on Ni tape substrate using reel-to-reel sol-gel and Pulse Laser Deposition (PLD) systems. The microstructural evolution of high temperature superconducting YBCO film and buffe...
متن کاملAll chemical YBa2Cu3O7 superconducting multilayers: Critical role of CeO2 cap layer flatness
New advances toward microstructural improvement of epitaxial CeO2 films grown by chemical solution deposition and their use as buffer layers for YBa2Cu3O7 (YBCO) films are presented. We demonstrate that the degree of epitaxy and the fraction of (001) atomically flat surface area are controlled by the incorporation of tetravalent (Zr) or trivalent (Gd) cations into the ceria lattice. The degree ...
متن کاملAFM STUDY OF CeO2 GROWTH ON SAPPHIRE AS A BUFFER LAYER FOR YBa2Cu3O7
The structure of CeO2 films grown on (1102) sapphire and on YBCO thin films was investigated. The films reported on here were grown by pulsed excimer laser deposition and their surface structure was probed using atomic force microscopy. We found that CeO2 films grown on sapphire were epitaxial with a granular structure which is smooth on an atomic scale. We see evidence of a surface reconstruct...
متن کاملCeO2 as insulation layer in high Tc superconducting multilayer and crossover structures
We present a study of the electrical properties of insulating CeO2 layers in combination with superconducting ~Y/Dy! Ba2Cu3O72d ~RBCO! films over ramps and in crossover structures. CeO2 is frequently used as a buffer layer, or template layer for biepitaxial grain boundary junctions, but can also be used as an insulating layer in ramp-type junctions and other multilayer structures. Epitaxial thi...
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ژورنال
عنوان ژورنال: MRS Bulletin
سال: 2000
ISSN: 0883-7694,1938-1425
DOI: 10.1557/mrs2000.64