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    Manufacturing method of an oxide superconductor with high critical current density
    1.
    发明公开
    Manufacturing method of an oxide superconductor with high critical current density 失效
    Oxid-Supraleiter mit hoher kritischer Stromdichte und Herstellungsmethode。

    公开(公告)号：EP0575968A1

    公开(公告)日：1993-12-29

    申请号：EP93109970.9

    申请日：1993-06-22

    申请人： INTERNATIONAL SUPERCONDUCTIVITY TECHNOLOGY CENTER ,  THE KANSAI ELECTRIC POWER CO., INC. ,  FUJIKURA LTD.

    发明人： Okamura, Osamu, c/o Supercond. Research Lab. Int. ,  Kume, Atsushi, c/o Supercond. Research Lab. Int. ,  Shiohara, Yuh, c/o Supercond. Research Lab. Int.

    IPC分类号： H01L39/24

    CPC分类号： H01L39/2483 ,  Y10S505/734

    摘要： An oxide superconductor capable of realizing a high critical current density and its manufacturing method requiring only a low temperature heat treatment. An oxide superconductor has a superconductive layer with a composition of RE₁Ba₂Cu₃O 7-x, where RE stands for any one of rare earth elements including Y, Er, Gd, Dy, Ho, Er, and Yb, which is formed on the substrate by RE₁Ba₂Cu₃O 7-x phase and CuO phase resulting from a decomposition of RE₁Ba₂Cu₄O₈ phase, in which the CuO phase and micro-defects caused by the decomposition function as pinning centers. This superconductive layer is formed by applying a solution containing organic compounds of a plurality of metallic elements for constituting the oxide superconductive layer; calcining the substrate applied with the solution to obtain a calcined body in which the organic compounds contained in the solution are thermally decomposed; heating the calcined body to produce RE₁Ba₂Cu₄O₈ phase; and decomposing the RE₁Ba₂Cu₄O₈ phase into RE₁Ba₂Cu₃O 7-x phase and CuO phase, to obtain the oxide superconductor.

    摘要翻译： 能够实现高临界电流密度的氧化物超导体及其仅需要低温热处理的制造方法。 氧化物超导体具有具有RE1Ba2Cu3O7-x组成的超导层，其中RE代表包括Y，Er，Gd，Dy，Ho，Er和Yb的稀土元素中的任何一种，其通过RE1Ba2Cu3O7- x相和CuO相由RE1Ba2Cu4O8相分解产生，其中CuO相和微分子缺陷引起的分解作用为钉扎中心。 该超导层通过涂布含有构成氧化物超导层的多个金属元素的有机化合物的溶液而形成; 煅烧施加有溶液的基板以获得其中包含在溶液中的有机化合物热分解的煅烧体; 加热煅烧体产生RE1Ba2Cu4O8相; 并将RE1Ba2Cu4O8相分解成RE1Ba2Cu3O7-x相和CuO相，得到氧化物超导体。