Heteroepitaxial YBa sub 2 Cu sub 3 O sub 7 minus x -SrTiO sub 3 -YBa sub 2 Cu sub 3 O sub 7 minus x trilayers examined by transmission electron microscopy

Journal Article · Mon Feb 18 04:00:00 EST 1991 · Applied Physics Letters; (USA)

DOI:https://doi.org/10.1063/1.104541· OSTI ID:5735835

Tidjani, M E; Gronsky, R ^[1]; Kingston, J J; Wellstood, F C; Clarke, J ^[2]

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1. Department of Materials Science and Mineral Engineering, University of California, Berkeley (USA) National Center for Electron Microscopy, Materials Sciences Division, Lawrence Berkeley Laboratory, Berkeley, California 94720 (USA)
2. Department of Physics, University of California, Berkeley (USA) Center for Advanced Materials, Materials Sciences Division, Lawrence Berkeley Laboratory, Berkeley, California 94720 (USA)

We report high-resolution transmission electron microscopy and electron diffraction studies of the heteroepitaxial superconductor-insulator-superconductor system YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}}-SrTiO{sub 3}-YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} deposited on polished (001)MgO substrates by {ital in} {ital situ} laser ablation. The resulting films grow epitaxially and consistently preserve a parallel orientation between the close-packed (001)YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} planes and (001)SrTiO{sub 3} planes over the entire trilayer, even in the presence of ledges or steps along vicinal interfaces. Although the interface regions showed strain occasionally relieved by stacking faults, they were free of disorder and any evidence of impurity phases. The observed epitaxial growth is very likely responsible for the excellent electrical properties found in similarly constructed multilayer interconnects.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5735835
• Journal Information: Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 58:7; ISSN APPLA; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON DIFFRACTION
ELECTRON MICROSCOPY
EPITAXY
JUNCTIONS
MICROSCOPY
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SCATTERING
STRONTIUM COMPOUNDS
STRONTIUM TITANATES
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTIVITY
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSMISSION ELECTRON MICROSCOPY
YTTRIUM COMPOUNDS
YTTRIUM OXIDES