Thickness dependence of the twin density in YBa sub 2 Cu sub 3 O sub 7 minus. delta. thin films sputtered onto MgO substrates

Journal Article · Mon May 13 00:00:00 EDT 1991 · Applied Physics Letters; (United States)

DOI:https://doi.org/10.1063/1.104996· OSTI ID:5491791

Streiffer, S K; Zielinski, E M; Lairson, B M; Bravman, J C ^[1]

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1. Department of Materials Science and Engineering, Stanford University, Stanford, California 94305-2205 (US)

The lengths and spacings of twins in YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} thin films deposited onto MgO substrates have been measured by transmission electron microscopy as a function of film thickness {ital t}, for {ital t} ranging from 50 to 1400 nm. The twin length is linear in {ital t}, while the twin spacing follows a {ital t}{sup 1/2} dependence. This form for the twin spacing is consistent with the prediction of a simple free energy expression for the twinning transformation.

• OSTI ID: 5491791
• Journal Information: Applied Physics Letters; (United States), Vol. 58:19; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
CRYSTAL DEFECTS
COPPER OXIDES
YTTRIUM OXIDES
HIGH-TC SUPERCONDUCTORS
SUPERCONDUCTING FILMS
THICKNESS
TWINNING
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
CRYSTAL STRUCTURE
DIMENSIONS
FILMS
OXIDES
OXYGEN COMPOUNDS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies