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Metalorganic chemical vapor deposition of Tl2CaBa2Cu2Oy superconducting thin films on sapphire.
- Source :
-
Applied Physics Letters . 9/18/1989, Vol. 55 Issue 12, p1258. 3p. - Publication Year :
- 1989
-
Abstract
- Superconducting Tl2CaBa2Cu2Oy thin films have been successfully grown on the single-crystal sapphire (1102) substrate by using the metalorganic chemical vapor deposition technique. The growth rate of the films was about 5 μm/h. The as-deposited film was post-annealed in a partially sealed ceramic crucible in the presence of a Tl2Ca2Ba2Cu3Oy pellet to achieve the superconducting phase. The x-ray data show strong diffraction from the Tl2CaBa2Cu2Oy superconducting phase in addition to the trace amounts of Ca2CuO3 and BaCO3. Superconducting transition temperatures with onset above 100 K and zero resistance at 94 K can be obtained by further heat treatment at 500 °C in oxygen. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 55
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 9832693
- Full Text :
- https://doi.org/10.1063/1.101892