发明名称 |
Oxide superconductor and method for producing same |
摘要 |
An Hg- or Nd-based oxide superconductor comprises Ba as a constituent element and has a content of carbon as an impurity at a level of not greater than 2.0 atomic % whereby the oxide superconductor stably shows high superconducting characteristics without causing degradation with time. For its production, BaO, which has a reduced content of carbon impurity of 0.5% or below, is provided as a feed stock for Ba, and the starting materials are mixed and processed in a dry atmosphere wherein an amount of a carbon-containing gas is suppressed to a certain level, thereby obtaining the oxide superconductor.
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申请公布号 |
US2003144149(A1) |
申请公布日期 |
2003.07.31 |
申请号 |
US20030350718 |
申请日期 |
2003.01.24 |
申请人 |
INTERNATIONAL SUPERCONDUCTIVITY TECHNOLOGY CENTER |
发明人 |
YAMAMOTO AYAKO;HU WEI-ZHI;TAJIMA SETSUKO |
分类号 |
C01G1/00;C01G3/00;C01G13/00;H01B12/00;H01B13/00;H01L39/12;H01L39/24;(IPC1-7):H01B1/00;H01F1/00 |
主分类号 |
C01G1/00 |
代理机构 |
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