发明名称 |
PROCESS FOR PRODUCING OXIDE POWDER AND OXIDE SUPERCONDUCTOR. |
摘要 |
An oxide powder having a uniform composition and a fine particle size and capable of being sintered at low temperature can be obtained at a temperature not higher than the boiling point of a solvent by forming fine superconductive oxide particles in a liquid phase according to the sol-gel process using alkoxides of a plurality of metallic elements constituting superconductive oxides as starting materials. An oriented film with good superconductive properties can be obtained by providing an interlayer composed of an oxide film between a base and the superconductive oxide upon forming the superconductive oxide film on the base using the powder. A strongly c-axis oriented superconductive film and a superconductive bulk can be prepared from a Ln-Ae-Cu-O or Bi-Ae-Cu-O material with a specific composition ratio. The superconductive film is obtained by applying a paste of these materials on a base, and heating it. The superconductive bulk is obtained by pressing in a given direction superconductive crystals precipitated by sintering these materials. <IMAGE> |
申请公布号 |
EP0486686(A4) |
申请公布日期 |
1990.12.14 |
申请号 |
EP19880905427 |
申请日期 |
1988.06.16 |
申请人 |
NIPPON TELEGRAPH AND TELEPHONE CORPORATION |
发明人 |
SHIBATA, SHUICHI;KITAGAWA, TAKESHI;OKAZAKI, HISAAKI;KIMURA, TAKAO;HORIGUCHI, MASAHARU |
分类号 |
B32B18/00;C01B13/32;C01G3/00;C01G29/00;C04B35/45;C04B35/624;H01L39/24 |
主分类号 |
B32B18/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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