NDLI: Epitaxial growth of biaxially aligned Y-Ba-Cu-O superconductors by spray pyrolysis on textured Ag ribbons and single crystal substrates

Content Provider	IEEE Xplore Digital Library
Author	Schindl, M. Genoud, J.-Y. HongLi Suo Dhalle, M. Walker, E. Flukiger, R.
Copyright Year	2002
Abstract	The deposition of Y-123 films by spray pyrolysis at room pressure on textured Ag ribbons was studied as an alternative to the high vacuum coated tapes techniques. It is shown that an epitaxial growth, at a rate of 0.35 /spl mu/m/min, is obtained on rolled and annealed {110}<011> textured Ag ribbons, without buffer layers. Processing parameters are optimized in order to get biaxially aligned Y-123 films with a thickness of a few micrometers. A nitrate solution of Y, Ba and Cu was sprayed on the substrate heated at 850/spl deg/C-900/spl deg/C. The films were then annealed in air in the same temperature range and then oxygen loaded in flowing oxygen. By a careful control of the nitrate stoichiometry in the aqueous initial solution, phase pure Y-123 films were deposited on [110] oriented Ag single crystals, {110}<011> Ag textured tapes and [100] SrTiO/sub 3/ substrates. X-ray investigations show a high degree of c-axis alignment. A biaxial orientation is found from X-ray pole figures and /spl phi/-scans. FWHM values as small as 1/spl deg/, 4/spl deg/ and 11/spl deg/ are measured on SrTiO/sub 3/, [110] Ag single crystal and {110}<011> Ag textured ribbons, respectively. The critical temperature was 90 K.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	3313
Ending Page	3316
Page Count	4
File Size	415909
File Format	PDF
ISSN	10518223
Volume Number	11
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Epitaxial growth Yttrium barium copper oxide Superconductivity Spraying Annealing Substrates Superconducting films Vacuum technology Buffer layers Temperature distribution
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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