发明授权
- 专利标题： SUPERCONDUCTING COMPOSITIONS
- 专利标题（中）： 超导化合物
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申请号： EP93916112.1申请日： 1993-07-21
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公开(公告)号： EP0651909B1公开(公告)日： 1997-03-19
- 发明人: LIU, Ru-Shi , HU, Shu-Fen , JEFFERSON, David Adamson , EDWARDS, Peter Phillip
- 申请人： BICC Public Limited Company
- 申请人地址： Devonshire House Mayfair Place London W1X 5FH GB
- 专利权人： BICC Public Limited Company
- 当前专利权人： BICC Public Limited Company
- 当前专利权人地址： Devonshire House Mayfair Place London W1X 5FH GB
- 代理机构： Poole, Michael John
- 优先权： GB9215667 19920723
- 国际公布： WO9402947 19940203
- 主分类号： H01B1/08
- IPC分类号： H01B1/08 ; H01B12/00 ; C01G3/02 ; C04B35/00
摘要：
A superconductor that is free of Tl and may have a sharp transition from metallic to superconducting behaviour at temperatures up to about 80K at least is characterized by the formula (PbaA1-a)(SrbBa1-b)2(CacB1-c)Cu2O7 in which at least half the A atoms are Hg and the remainder, if any, are selected from one or more of Zn, Cd, Tl, Sc, Mg, and Cu; B is selected from Y and the rare earth elements; a is from 0.3 to 0.7; b is from 0 to 1; and c is from 0.2 to 0.5 (all limits inclusive).
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