Interfacial reaction products and film orientation in YBa2Cu3O7−x on zirconia substrates with and without CeO2 buffer layers
- 1 November 1993
- journal article
- Published by Springer Science and Business Media LLC in Journal of Materials Research
- Vol. 8 (11), 2785-2798
- https://doi.org/10.1557/jmr.1993.2785
Abstract
Thick film (1.2 μm) YBCO superconductors grown by pulsed laser deposition on unbuffered and CeO2-buffered single crystal (001)-oriented yttria-stabilized zirconia (YSZ) substrates have been investigated. YBCO and YSZ react to form BaZrO3 (BZO), whereas YBCO and CeO2 react to form BaCeO3. Reaction phases were examined by θ-2θ and four-circle x-ray diffraction and high resolution electron microscopy. Three orientation relationships identified for the unbuffered films were (i) (001)YBCO ‖ (011)BZO ‖ (001)YSZ with [110]YBCO ‖ [100]BZO ‖ [100]YSZ, (ii) (001)YBCO ‖ (001)BZO ‖ (001)YSZ with [110]YBCO ‖ [100]BZO ‖ [100]YSZ, and (iii) (001)YBCO ‖ (001)BZO ‖ (001)YSZ with [100]YBCO ‖ [100]BZO ‖ [100]YSZ. The results suggest that for films grown at typical deposition temperatures, YBCO epitaxy is established before the interfacial reaction occurs. The presence of BaCeO3 in buffered films grown at high temperatures (790 °C) was confirmed by θ-2θ scans and selected area diffraction patterns.Keywords
This publication has 19 references indexed in Scilit:
- A reliable method of TEM cross section specimen preparation of YBCO films on various substratesPhysica C: Superconductivity and its Applications, 1993
- Effects of homoepitaxial surfaces and interface compounds on the in-plane epitaxy of YBCO films on yttria-stabilized zirconiaJournal of Materials Research, 1992
- The 45° grain boundaries in YBa2Cu3O7−δJournal of Materials Research, 1992
- A TEM study of microstructures of YBa2Cu3O7−x thin films deposited on LaAlO3 by laser ablationJournal of Materials Research, 1991
- Interaction of Chemically Vapor Deposited YBa2Cu3Ox with Yttria‐Stabilized Zirconia SubstratesJournal of the American Ceramic Society, 1991
- Interface between Y-Ba-Cu-O thin film and cubic zirconia substrateApplied Physics Letters, 1991
- Cross-sectional TEM investigations of the microstructure and film-substrate substrate interface in Y-Ba-Cu-O thin filmsPhysica C: Superconductivity and its Applications, 1991
- High current capacity textured thick films of YBCO on YSZ obtained by melt processingCryogenics, 1990
- Crystallography of YBa2Cu3O6+x thin film-substrate interfacesJournal of Materials Research, 1989
- Low-loss substrate for epitaxial growth of high-temperature superconductor thin filmsApplied Physics Letters, 1988