Superconducting properties of Ba2YCu3O7−x thin films prepared by chemical vapor deposition on SrTiO3 and a metal substrate
- 9 October 1989
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 55 (15), 1581-1582
- https://doi.org/10.1063/1.102311
Abstract
Superconducting Ba2 YCu3 O7−x thin films were prepared by chemical vapor deposition using β‐diketonate chelates on SrTiO3 single crystalline substrates, metal substrates, and metal substrates with a polycrystalline SrTiO3 buffer. The temperatures of complete superconducting transitions were observed at 89, 81, and 84 K, respectively. Reduced critical current density of the film on a single crystalline substrate in magnetic fields up to 600 mT at 77 K remained one or two orders of magnitude higher than that of powder metallurgical processed specimens. According to x‐ray diffraction patterns, the existence of a well‐oriented orthorhombic Ba2 YCu3 O7−x structure has been confirmed in all specimens.Keywords
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