Grain boundary evolution of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} in the vicinity of steps on patterned (001) LaAlO{sub 3} substrates

Journal Article · Thu May 01 04:00:00 EDT 1997 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.119048· OSTI ID:503576

Gustafsson, M; Olsson, E; Yi, H R; Winkler, D; Claeson, T ^[1]

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1. Department of Physics, Chalmers University of Technology, S-412 96 Goeteborg (Sweden)

The microstructure of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}}(YBCO) grain boundaries obtained at step edges on (001) LaAlO{sub 3} substrates have been studied by scanning and transmission electron microscopy. A typical morphology of the YBCO grain boundaries is distinguished by two parts where the parts are expected to have different junction properties. One part of the boundary is caused by the difference in nucleation probability between the (001) surface and the inclined step facet. The second morphology is developing as a result of minimization of the YBCO surface energy. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 503576
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 21 Vol. 70; ISSN 0003-6951; ISSN APPLAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM COMPOUNDS
BARIUM OXIDES
COPPER OXIDES
GRAIN BOUNDARIES
HIGH-TC SUPERCONDUCTORS
MICROSTRUCTURE
SCANNING ELECTRON MICROSCOPY
SURFACE ENERGY
TRANSMISSION ELECTRON MICROSCOPY
YTTRIUM COMPOUNDS
YTTRIUM OXIDES