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      Microstructure of YBa2Cu3O7−x thin films deposited by laser evaporation

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      Journal of Materials Research

      Cambridge University Press (CUP)

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          Epitaxial growth of YBa2Cu3O7−xthin films by a laser evaporation process

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            Single-Crystal YBa2Cu3O7-xThin Films by Activated Reactive Evaporation

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              Crystallography of YBa2Cu3O6+ x thin film-substrate interfaces

              The epitactic nature of the growth of YBa 2 Cu 3 O 6+ x (YBCO) superconducting thin films on ceramic substrates has been studied using high-resolution electron microscopy (HREM) and selected-area diffraction (SAD) of cross-sectional specimens. The films were grown in situ on (001)-oriented MgO and (001)-oriented Y 2 O 3 -stabilized cubic ZrO 2 (YSZ) single-crystal substrates by electron beam evaporation. Both of these materials have large lattice misfits with respect to YBCO. Different orientation relationships were observed for films grown on the two types of substrates. These orientation relationships are shown to provide the best matching of the oxygen sublattices across the substrate-film interfaces. A crystalline intermediate layer, 6 nm thick, between the YBCO film and YSZ substrate was observed by HREM and shown by EDS to be a Ba-enriched phase, possibly barium zirconate formed by a reaction. In contrast, the YBCO–MgO interface was found to be sharp and free of any intermediate layers.
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                Author and article information

                Journal
                applab
                Journal of Materials Research
                J. Mater. Res.
                Cambridge University Press (CUP)
                0884-2914
                2044-5326
                November 1990
                January 31 2011
                November 1990
                : 5
                : 11
                : 2620-2632
                Article
                10.1557/JMR.1990.2620
                © 1990

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