Preparation of Y2Ba4Cu8O20-x thin films by thermal coevaporation

Preparation of Y2Ba4Cu8O20-x thin films by thermal coevaporation

We report on the preparation of Y2Ba4Cu8O20−x (‘‘248’’) thin films by coevaporation using a combination of electron beam and Knudsen cell vapor sources. Our best film shows a superconducting onset at 80 K and zero resistance at 72 K. The x-ray diffraction patterns show nearly single phase ‘‘248’’ wi...

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Veröffentlicht in:Applied physics letters 1988-08, Vol.53 (8), p.708-709
Hauptverfasser: BERKLEY, D. D, KIM, D. H, JOHNSON, B. R, GOLDMAN, A. M, MECARTNEY, M. L, BEAUCHAMP, K, MAPS, J
Format: Artikel
Sprache:eng
Schlagworte:
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Ion and electron beam-assisted deposition
ion plating
Materials science
Methods of deposition of films and coatings
film growth and epitaxy
Physics
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Beschreibung
Zusammenfassung:We report on the preparation of Y2Ba4Cu8O20−x (‘‘248’’) thin films by coevaporation using a combination of electron beam and Knudsen cell vapor sources. Our best film shows a superconducting onset at 80 K and zero resistance at 72 K. The x-ray diffraction patterns show nearly single phase ‘‘248’’ with a small YBa2Cu3O7−x (‘‘123’’) impurity. It has been our experience that films can be annealed at least twice without displaying any shift in diffraction peak position.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.100556