Crystallography of YBa sub 2 Cu sub 3 O sub 6+ x thin film--substrate interfaces

Journal Article · Fri Sep 01 04:00:00 EDT 1989 · Journal of Materials Research; (USA)

DOI:https://doi.org/10.1557/JMR.1989.1072· OSTI ID:5420716

Tietz, L A; Carter, C B ^[1]; Lathrop, D K; Russek, S E; Buhrman, R A ^[2]; Michael, J R ^[3]

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1. Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853 (US)
2. School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853
3. Homer Research Laboratory, Bethlehem Steel Corporation, Bethlehem, Pennsylvania 18016

The epitactic nature of the growth of YBa{sub 2}Cu{sub 3}O{sub 6+{ital 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 {ital in} {ital situ} on (001)-oriented MgO and (001)-oriented Y{sub 2}O{sub 3}-stabilized cubic ZrO{sub 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.

• OSTI ID: 5420716
• Journal Information: Journal of Materials Research; (USA), Journal Name: Journal of Materials Research; (USA) Vol. 4:5; ISSN JMREE; ISSN 0884-2914
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CERAMICS
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON DIFFRACTION
ELECTRON MICROSCOPY
FILMS
IN-SITU PROCESSING
INTERFACES
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MICROSCOPY
ORIENTATION
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PROCESSING
RESOLUTION
SCATTERING
SUPERCONDUCTING FILMS
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES