| 摘要 |
Cations such as La, Sr, Cu, or Y, Ba, Cu are dissolved in an organic solvent such as ethylene glycol and citric acid. The solution is formed into either a free-standing or supported film which is dried to produce a solid organic polymer. The polymer is then fired in an oxidizing atmosphere (pyrolysis) to obtain the superconducting oxide. It is preferred that the film be spin coated on a substrate to produce uniform coatings of thicknesses less than one micrometer. The resulting superconducting oxide film is fully dense, of controlled microstructure, very homogeneous in composition and suitable for demanding electronic device purposes or as coatings to form superconducting wires or other current carrying components.
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