发明名称 |
Verfahren zur Herstellung von oxidischen Supraleitern des Typs Wismut. |
摘要 |
A method of manufacturing a bismuth type oxide superconductor, wherein a molded body of a bismuth type oxide superconducting substance comprising bismuth, an alkaline earth metal, copper, and oxygen or a precursor thereof is subjected to a heat treatment for producing a superconducting phase and then subjected to one step selected from (1) a step of cooling the heated body from 700 DEG C to 200 DEG C in an atmosphere having an oxygen partial pressure of not less than 0.1 atm at a cooling rate of not less than 10 DEG C/min, (2) a step of cooling the heated body from 700 DEG C in an atmosphere having an oxygen partial pressure of less than 0.1 atm at a cooling rate of less than 10 DEG C/min, and (3) a step of cooling the heated body, and then performing a heat treatment for the cooled heated body in an atmosphere having an oxygen partial pressure of not more than 0.1 atm at a temperature from 700 DEG C to 200 DEG C. |
申请公布号 |
DE68921382(D1) |
申请公布日期 |
1995.04.06 |
申请号 |
DE1989621382 |
申请日期 |
1989.07.20 |
申请人 |
THE FURUKAWA ELECTRIC CO., LTD., TOKIO/TOKYO, JP |
发明人 |
IMAI, KUMIKO, KANAGAWA-KU YOKOHAMA-SHI, JP |
分类号 |
C04B35/45;C04B35/64;H01L39/24;(IPC1-7):C04B35/00 |
主分类号 |
C04B35/45 |
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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