| 摘要 |
PURPOSE:To obtain a high critical current density and to improve the superconductive property by forming the first superconductive layer in the spattering and the second superconductive layer in the CVD method making the first superconductive layer as a deposition core. CONSTITUTION:The oxide superconductor 2 is composed of the first superconductive layer 2a formed on a substrate 1 in the spattering, and the second superconductive layer 2b formed in the CVD method making the layer 2a as a deposition core. Since the crystal orientation of the second superconductive layer 2b is made uniform following to the good crystal orientation property of the first superconductive layer 2a, the crystal orientation of the whole oxide superconductor 2 consists of the both layers can be controlled in a good condition. Consequently, the oxide superconductor 2 presents a high critical current density, and by heat-treating the oxide superconductor 2 in the oxygen ambience, enough oxygen can be fed to the inside of the oxide superconductor 2, and the superconductive property in the oxide superconductor 2 can be improved. |
