发明公开
- 专利标题： Process for preparing superconductors
- 专利标题（中）： Verfahren zur Herstellung von Supraleitern。
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申请号： EP89307481.5申请日： 1989-07-24
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公开(公告)号： EP0352996A2公开(公告)日： 1990-01-31
- 发明人: Uzumaki, Takuya , Yamanaka, Kazunori , Kamehara, Nobuo , Niwa, Koichi
- 申请人： FUJITSU LIMITED
- 申请人地址： 1015, Kamikodanaka, Nakahara-ku Kawasaki-shi, Kanagawa 211 JP
- 专利权人： FUJITSU LIMITED
- 当前专利权人： FUJITSU LIMITED
- 当前专利权人地址： 1015, Kamikodanaka, Nakahara-ku Kawasaki-shi, Kanagawa 211 JP
- 代理机构： Silverman, Warren
- 优先权： JP185015/88 19880725; JP285125/88 19881111; JP301635/88 19881129
- 主分类号： C04B35/00
- IPC分类号： C04B35/00 ; H01L39/24
摘要：
Bi-Pb-Sr-Ca-Cu-O system and Tl-Pb-Ba-Ca-Cu-O system superconductor having a high Tc phase (about 110 K and about 125 K, respectively, or more) in a high proportion are obtained by adding a calcium compound which forms CaO and a liquid phase at a temperature for firing the superconductors, e.g., Ca₂PbO x (x = 3 or 4); or by starting from a composition represented by the formula: Bi₂Pb (n-1)/2 Sr₂Ca n Cu n+1 O b′ , or
Tℓ₂Pb (n-1)/2 Ba₂Ca n Cu n+1 O b where 2 ≦ n ≦ 10, 9 ≦ b ≦ 40.5, i.e., at a ratio of Ca:Pb = 2:1.
Tℓ₂Pb (n-1)/2 Ba₂Ca n Cu n+1 O b where 2 ≦ n ≦ 10, 9 ≦ b ≦ 40.5, i.e., at a ratio of Ca:Pb = 2:1.
公开/授权文献
- EP0352996B1 Process for preparing superconductors 公开/授权日：1993-03-31
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