DocumentCode :
1548092
Title :
In-plane aligned YBCO thick films on {110} rolled and single crystal silver by ultrasonic mist pyrolysis
Author :
Wells, J.J. ; Crossley, A. ; Sweeney, R. ; MacManus-Driscoll, J.L.
Author_Institution :
Dept. of Mater., Imperial Coll. of Sci., Technol. & Med., London, UK
Volume :
9
Issue :
2
fYear :
1999
fDate :
6/1/1999 12:00:00 AM
Firstpage :
1983
Lastpage :
1985
Abstract :
An ultrasonic mist pyrolysis system has been used to fabricate thick films of YBa/sub 2/Cu/sub 3/O/sub 7-x/ (YBCO) on rolled and single crystal silver substrates. The substrates were heated to 900/spl deg/C and nitrate solutions of the constituent cations were sprayed using a nitrogen carrier gas. Highly c-axis aligned YBCO films were obtained by deposition at a rate of /spl sim/1 /spl mu/m per minute. Phase pure YBCO formed up to a limit of /spl sim/6 /spl mu/m. For thicker films, BaCuO/sub 2/ and Y/sub 2/BaCuO/sub 5/ also formed. On {110} oriented single crystal silver, the films showed in-plane alignment with a four fold symmetry, and the FWHM in the azimuthal direction of the main peaks was /spl sim/3/spl deg/. On the polycrystalline substrate the in-plane texture showed a /spl sim/20/spl deg/ FWHM, equivalent to that of {110}<110> textured silver substrate. The onset of superconducting transition was measured as /spl sim/90.2K for sample with a film thickness of /spl sim/5 /spl mu/m.
Keywords :
CVD coatings; barium compounds; high-temperature superconductors; pyrolysis; superconducting thin films; superconducting transition temperature; yttrium compounds; 6 mum; 90.2 K; 900 C; YBa/sub 2/Cu/sub 3/O/sub 7-x/; YBa/sub 2/Cu/sub 3/O/sub 7/; high temperature superconductor; in-plane aligned YBCO thick films; superconducting transition; ultrasonic mist pyrolysis; Conducting materials; Magnetic materials; Silver; Spraying; Substrates; Superconducting films; Superconducting materials; Temperature; Thick films; Yttrium barium copper oxide;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/77.784851
Filename :
784851
Link To Document :
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