Atomic layer by atomic layer growth of DyBaCuO superconducting thin films by molecular beam epitaxy

Journal Article · Mon Aug 20 00:00:00 EDT 1990 · Applied Physics Letters; (USA)

DOI:https://doi.org/10.1063/1.103430· OSTI ID:6381778

Schuhl, A; Cabanel, R; Lequien, S; Ghyselen, B; Tyc, S; Creuzet, G ^[1]; Siejka, J ^[2]

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1. Thomson-CSF LCR, 91404 Orsay Cedex (France)
2. GPS Universite Paris-7, 2 place Jussieu 75251 Paris Cedex (France)

Superconducting thin films of DyBaCuO have been achieved by molecular beam epitaxy. The films are strongly oriented with the {ital c} axis perpendicular to the substrate, and currently reach {ital R}=0 between 70 and 80 K. Critical temperatures ({ital R}=0) up to 50 K were obtained on 150-A-thick films deposited atomic layer by atomic layer. These films present a flat surface as observed by high-energy electron diffraction. We show that in this process, a nominal 1:2:3 composition is not sufficient for the obtention of flat superconducting film. A good accuracy in the number of atoms deposited for each atomic layer is required.

• OSTI ID: 6381778
• Journal Information: Applied Physics Letters; (USA), Vol. 57:8; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
MOLECULAR BEAM EPITAXY
COPPER OXIDES
DYSPROSIUM OXIDES
CRYSTAL GROWTH
ELECTRON DIFFRACTION
HIGH-TC SUPERCONDUCTORS
JOSEPHSON JUNCTIONS
SUPERCONDUCTING FILMS
TRANSITION TEMPERATURE
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
DIFFRACTION
DYSPROSIUM COMPOUNDS
EPITAXY
FILMS
JUNCTIONS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SCATTERING
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies