| 发明名称 |
Oxide superconducting material and method for producing the same. |
| 摘要 |
<p>According to the present invention, there is provided an oxide superconducting material Bi2-xPbx(Sr, Ca)<7>Cu<6>Oq (0.2 & x & 0.6, q & 8.2) (1> having orthorhombic and/or monoclinic structures. The present invention also provides a method for producing the above oxide superconducting material comprising the steps of forming a composition of Bi, Pb, Sr, Ca and Cu mixed at an atomic ratio of Bi : Pb : Sr : Ca : Cu = 2-x : x : 2 : 1 : 2, and thermally treating the composition in an inert gas atmosphere with oxygen partial pressure of 1/13 atm or less. The oxide superconducting material of the present invention is applicable at a higher temperature and at a higher magnetic field. <IMAGE></p> |
| 申请公布号 |
EP0536730(A1) |
申请公布日期 |
1993.04.14 |
| 申请号 |
EP19920117136 |
申请日期 |
1992.10.07 |
| 申请人 |
INTERNATIONAL SUPERCONDUCTIVITY TECHNOLOGY CENTER;THE TOKYO ELECTRIC POWER CO., INC.;NISSAN MOTOR CO., LTD.;MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
WAKATA, MITSUNOBU;TAKANO, SATOSHI;MUNAKATA, FUMIO;YAMAUCHI, HISAO |
| 分类号 |
C01G1/00;C01G29/00;C04B35/45;H01B12/00;H01B13/00;H01L39/12;H01L39/24 |
主分类号 |
C01G1/00 |
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