发明授权
- 专利标题： Thallium oxide superconductor and method of preparing the same
- 专利标题（中）： 氧化铊超导体及其制备方法
-
申请号： US232847申请日： 1994-04-25
-
公开(公告)号： US5744427A公开(公告)日： 1998-04-28
- 发明人: Yasuko Torii
- 申请人： Yasuko Torii
- 申请人地址： JPX
- 专利权人： Sumitomo Electric Industries, Ltd.
- 当前专利权人： Sumitomo Electric Industries, Ltd.
- 当前专利权人地址： JPX
- 优先权： JPX2-77463 19900326; JPX2-77464 19900326; JPX2-77465 19900326; JPX2-77466 19900326; JPX2-80419 19900327; JPX2-80420 19900327; JPX2-80422 19900327
- 主分类号： C04B35/45
- IPC分类号： C04B35/45 ; H01L39/24
摘要：
In a method of preparing a thallium oxide superconductor having components of Tl-Bi-Ca-Sr-Cu-O or Tl-Bi-Pb-Ca-Sr-Cu-O from raw material powder, the raw material powder is subjected to first heat treatment, then exposed to a compressive load, and thereafter subjected to second heat treatment. Thus, a thallium oxide superconductor having a high critical current density can be obtained.