发明授权
US5252544A Oxide superconductor having the formula Pb.sub.a (M.sub.1-x-y Ce.sub.x
Sr.sub.y).sub.4 Cu.sub.3-a O.sub.z where M is at least one rare earth
element
失效
具有式Pba（M1-x-yCexSry）4Cu3-aOz的氧化物超导体，其中M是至少一种稀土元素
- 专利标题： Oxide superconductor having the formula Pb.sub.a (M.sub.1-x-y Ce.sub.x Sr.sub.y).sub.4 Cu.sub.3-a O.sub.z where M is at least one rare earth element
- 专利标题（中）： 具有式Pba（M1-x-yCexSry）4Cu3-aOz的氧化物超导体，其中M是至少一种稀土元素
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申请号： US712264申请日： 1991-06-07
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公开(公告)号： US5252544A公开(公告)日： 1993-10-12
- 发明人: Toshihiko Maeda , Kazuhiro Sakuyama , Shin-ichi Koriyama , Ataru Ichinose , Hisao Yamauchi , Shoji Tanaka
- 申请人： Toshihiko Maeda , Kazuhiro Sakuyama , Shin-ichi Koriyama , Ataru Ichinose , Hisao Yamauchi , Shoji Tanaka
- 申请人地址： JPX Tokyo JPX Sendai JPX Kyoto JPX Tokyo JPX Tokyo
- 专利权人： International Superconductivity Technology Center,Tohoku Electric Power Company, Incorporated,Kyocera Corporation,Central Research Institute of Electric Power Industry,The Furukawa Electric Co., Ltd.
- 当前专利权人： International Superconductivity Technology Center,Tohoku Electric Power Company, Incorporated,Kyocera Corporation,Central Research Institute of Electric Power Industry,The Furukawa Electric Co., Ltd.
- 当前专利权人地址： JPX Tokyo JPX Sendai JPX Kyoto JPX Tokyo JPX Tokyo
- 优先权： JPX2-157026 19900614
- 主分类号： C01G3/00
- IPC分类号： C01G3/00 ; C01G1/00 ; C01G21/00 ; C04B35/45 ; H01B12/00 ; H01L39/12 ; C01F11/02 ; C01F17/00 ; C01G3/02
摘要：
An oxide superconductor which has a composition expressed by the following general formula and whose crystal structure is 1222-phase structure.Pb.sub.a (M.sub.1-x-y Ce.sub.x Sr.sub.y).sub.4 Cu.sub.3-a O.sub.z (I)(where M represents at least one element selected from the group consisting of Y, La, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb, and Lu, and a, x, y, and z denote the numbers which satisfy 0.3.ltoreq.a.ltoreq.0.7, 0
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