Development of buffer layers for high quality Tl-Pb-Sr-Ba-Ca-Cu-O thick films on flexible metal substrates
| Autor: | J. Wendelin, Raghu N. Bhattacharya, Douglas L. Schulz, D. S. Ginley, James A. Voigt, E.P. Roth, R.D. Blaugher, J. McGraw, P.A. Parilla |
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| Rok vydání: | 1997 |
| Předmět: |
Aluminium oxides
Materials science Excimer laser Annealing (metallurgy) medicine.medical_treatment Analytical chemistry Condensed Matter Physics Epitaxy Electronic Optical and Magnetic Materials Pulsed laser deposition X-ray crystallography medicine Electrical and Electronic Engineering Single crystal Yttria-stabilized zirconia |
| Zdroj: | IEEE Transactions on Appiled Superconductivity. 7:1969-1972 |
| ISSN: | 1051-8223 |
| DOI: | 10.1109/77.620973 |
| Popis: | Previous work has demonstrated the ability to grow extremely high quality Tl/sub 0.5/Pb/sub 0.5/Sr/sub 1.6/Ba/sub 0.4/Ca/sub 2/Cu/sub 3/O/sub x/ epitaxial films up to 15 /spl mu/m thick using melt growth techniques on single crystal LaAlO/sub 3/ substrates. This melt growth process is an ideal candidate for producing high quality superconducting films on flexible metal substrates with textured buffer layers; however, the textured buffer layer of choice, cubic yttria stabilized zirconia (YSZ), appears to be incompatible with the melt growth of TI-Pb-Sr-Ba-Ca-Cu-O films. In this work, we investigate textured buffer layers which are compatible with the epitaxial growth of Tl/sub 0.5/Pb/sub 0.5/Sr/sub 1.6/Ba/sub 0.4/Ca/sub 2/Cu/sub 3/O/sub x/ films. Crucial properties for the successful development of a suitable buffer layer are lattice matching, chemical stability and texture. Buffer layer materials investigated are CeO/sub 2/ and LaAlO/sub 3/ grown using a UV (248 nm) pulsed excimer laser deposition system equipped with multiple targets and a controlled ambient. Influence of substrate temperature and ambient gas pressure and flow on buffer growth are analyzed via XRD characterization. Highly textured buffer layers have been fabricated. |
| Databáze: | OpenAIRE |
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