发明授权
- 专利标题： Superconducting 2-4-7 oxides
- 专利标题（中）： 超导2-4-7氧化物
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申请号： US659410申请日： 1991-05-28
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公开(公告)号： US5559084A公开(公告)日： 1996-09-24
- 发明人: John B. Vandersande , Gregory J. Yurek , Toshihiro Kogure
- 申请人： John B. Vandersande , Gregory J. Yurek , Toshihiro Kogure
- 申请人地址： MA Cambridge
- 专利权人： Massachusetts Institute of Technology
- 当前专利权人： Massachusetts Institute of Technology
- 当前专利权人地址： MA Cambridge
- 主分类号： C04B35/45
- IPC分类号： C04B35/45 ; C04B35/65 ; H01L39/12 ; C04B35/505 ; C04B35/622
摘要：
Disclosed are a composition and a method of preparing a composition of the formula R.sub.2 Q.sub.4 Cu.sub.7 O.sub.x, wherein R is a rare-earth ion or a mixture of rare earth ions, and Q is Ba, or Ba combined with either Sr or Ca or both Sr and Ca. Such compositions have a unique crystalline structure and are superconducting oxides.
公开/授权文献
- US5692989A Self aligning planetary gear transmission & speed reducer 公开/授权日：1997-12-02