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    Oxide superconductors and method for producing same
    2.
    发明公开
    Oxide superconductors and method for producing same 失效
    Oxidische Supraleiter和Verfahren zu ihrer Herstellung。

    公开(公告)号：EP0476504A1

    公开(公告)日：1992-03-25

    申请号：EP91115377.3

    申请日：1991-09-11

    申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. ,  TOHOKU ELECTRIC POWER CO., INC. ,  CENTRAL RESEARCH INSTITUTE OF ELECTRIC POWER INDUSTRY ,  THE TOKYO ELECTRIC POWER CO., INC. ,  INTERNATIONAL SUPERCONDUCTIVITY TECHNOLOGY CENTER

    发明人： Wada, Takahiro ,  Yaegashi, Yuji, Tohoku Denryoku Benkyoso ,  Ichinose, Ataru ,  Suzuki, Nobuo ,  Yamauchi, Hisao ,  Tanaka, Shoji

    IPC分类号： C04B35/00 ,  H01L39/24

    CPC分类号： C04B35/4504 ,  H01L39/2419 ,  Y10S505/779 ,  Y10S505/78

    摘要： The present invention provides an oxide superconductor which has a relatively high transition temperature T c . This superconductor has the chemical formula (R 1-x Ca x )(Ba 1-y Sr y )₂Cu₃O 7-z wherein R is at least one rare earth element selected from the group consisting of Tm, Yb and Lu, x is within the range of 0.1 ≦ x ≦ 0.5, y is within the range of 0.1 ≦ y ≦ 0.4 and z is within the range of 0.05 ≦ z ≦ (x/2 + 0.5). The invention further provides a method for producing the oxide superconductor which comprises firing a composition of the formula (R 1-x Ca x )(Ba 1-y Sr y )₂Cu₃O 7-z wherein R is at least one rare earth element selected from the group consisting of Tm, Yb and Lu, x is within the range of 0.1 ≦ x ≦ 0.5 and y is within the range of 0.1 ≦ y ≦ 0.4 at a temperature of from 750°C to the melting temperature of the composition under an oxygen partial pressure P(O₂) of 0.001 atm ≦ P(O₂) ≦ 0.2 atm and then heat treating the composition to adjust the oxygen loss z to 0.05 ≦ z ≦ (x/2 + 0.5).

    摘要翻译： 本发明提供一种具有较高转变温度Tc的氧化物超导体。 该超导体具有化学式（R1-xCax）（Ba1-ySry）2Cu3O7-z，其中R是选自Tm，Yb和Lu中的至少一种稀土元素，x在0.1〜 x <0.5，y在0.1≤y≤0.4的范围内，z在0.05≤z≤（x / 2 + 0.5）的范围内。 本发明还提供了一种制备氧化物超导体的方法，其包括焙烧式（R1-xCax）（Ba1-ySry）2Cu3O7-z的组合物，其中R是选自Tm，Yb中的至少一种稀土元素 并且在750℃的温度下，Lu，x在0.1≤x≤0.5的范围内，y在0.1≤y≤0.4的范围内，相对于组合物的熔融温度 0.001atm的氧分压P（O 2）= P（O 2）≤0.2atm，然后热处理该组合物以将氧损失z调节至0.05≤z≤（x / 2 + 0.5） ）。

    Layered copper oxides
    7.
    发明公开
    Layered copper oxides 失效
    Geschichtete Kupferoxide。

    公开(公告)号：EP0483858A1

    公开(公告)日：1992-05-06

    申请号：EP91118635.1

    申请日：1991-10-31

    申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. ,  INTERNATIONAL SUPERCONDUCTIVITY TECHNOLOGY CENTER ,  CENTRAL RESEARCH INSTITUTE OF ELECTRIC POWER INDUSTRY ,  UBE INDUSTRIES LIMITED

    发明人： Wada, Takahiro ,  Ichinose, Ataru ,  Hamada, Kazuyuki ,  Yamauchi, Hisao ,  Tanaka, Shoji

    IPC分类号： C04B35/00

    CPC分类号： C04B35/4504 ,  C04B35/4512 ,  C04B35/4517 ,  Y10S505/775 ,  Y10S505/776 ,  Y10S505/783

    摘要： The present invention provides a layered copper oxide as an insulator for superconductor or as a superconductor, which has a chemical composition represented by the formula of (R,Ce)₃Sr₂Cu₂(M,Cu)O₁₁, wherein R is a rare earth element other than Ce and M is one or both of Pb and Tl, and has a crystal structure comprising a (M,Cu)Sr₂(R,Ce)Cu₂O₇ unit of a TlBa₂CaCu₂O₇(1-2-1-2)type structure and a [(R,Ce)O₂]₂ unit of a fluorite-type structure alternately put on each other, or a chemical composition represented by the formula of (R,Ce)₃Sr₂Cu₂(M,Cu)O 10+z , wherein R is a rare earth element other than Ce, M is one or both of Pb or Tl, and has a crystal structure comprising a (R,Ce)Sr₂Cu₂(Cu,M)O 6+z unit of a YBa₂Cu₃O 6+δ -type structure and a [(R,Ce)O₂]₂ unit of a fluorite-type structure alternately put on each other, wherein z is in the range of 0 ≦ z ≦ 2 and δ is in the range of 0 ≦ δ ≦ 1.

    摘要翻译： 本发明提供了作为超导体或超导体的绝缘体的层状氧化铜，其具有由式（R，Ce）3 Sr 2 Cu 2（M，Cu）O 11表示的化学组成，其中R是除 Ce和M是Pb和Tl中的一种或两种，并且具有包含TlBa2CaCu2O7（1-2-1-2）型结构的（M，Cu）Sr2（R，Ce）Cu2O7单元和[（ R，Ce）O 2 O 2 + Cu（O，C）O 10 + z的化学组成，或者由式（R，Ce）3Sr2Cu2（M，Cu）O10 + z表示的化学组成，其中R是稀土 除Ce以外的元素，M是Pb或Tl中的一种或两种，并且具有包含YBa2Cu3O6 +δ型结构的（R，Ce）Sr2Cu2（Cu，M）O6 + z单元和[（R， Ce）O 2] 2单位的萤石型结构彼此交替放置，其中z在0≤z≤2范围内，δ在0≤δ≤1的范围内 。