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公开(公告)号：JP2002009353A
公开(公告)日：2002-01-11
申请号：JP2000182223
申请日：2000-06-16
Applicant: INT SUPERCONDUCTIVITY TECH
Inventor： JULIJ ERUTSUEFU , NAKAO KOICHI , YAMADA YASUSHI , BUN TAKEKUNI , ENOMOTO YOICHI , HIRABAYASHI IZUMI , KOSHIZUKA NAOKI
Abstract: PROBLEM TO BE SOLVED: To provide a high temperature Josephson junction element exhibiting critical current-magnetic field characteristics different from the Fraunhofer pattern of Josephson junction in the s-s wave junction of a metal based superconductor. SOLUTION: The high temperature Josephson junction element employs a bicrystal oxide superconductor where two grains forming the junction interface of a bicrystal oxide superconducting film 6 formed on a bicrystal substrate 3 are c-axis oriented grains and the boundary interfaces of these two grains are 110} face and 100} face or 010} face. Superconducting critical current exhibits a minimal value of substantially 0 under 0 magnetic field and repeats maximal and minimal values periodically as the absolute value of magnetic field increases.
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公开(公告)号：EP3007180A4
公开(公告)日：2016-05-18
申请号：EP14804085
申请日：2014-05-28
Applicant: INT SUPERCONDUCTIVITY TECH , FUJIKURA LTD , SWCC SHOWA CABLE SYS CO LTD , FURUKAWA ELECTRIC CO LTD
Inventor： MACHI TAKATO , YOSHIDA TOMO , NAKAMURA TATSUNORI , KATAYAMA KOTA , NAKAO KOICHI , TANABE KEIICHI
CPC classification number: H01B12/04 , H01B13/0009 , H01L39/143 , H01L39/2467 , H01L39/248
Abstract: An oxide superconductor includes: a substrate made of a metal; an insulating intermediate layer provided on the substrate; an oxide superconducting layer provided on the intermediate layer; a metal stabilizing layer provided on the oxide superconducting layer; and a plurality of dividing grooves which divide the metal stabilizing layer and the oxide superconducting layer along a longitudinal direction of the substrate, reach the inside of the intermediate layer through the oxide superconducting layer from the metal stabilizing layer, and do not reach the substrate. The metal stabilizing layer and the oxide superconducting layer are divided to form a plurality of filament conductors by the plurality of dividing grooves, and in each dividing groove of the plurality of dividing grooves, a width of a groove opening portion of the dividing groove is equal to or greater than a width of a groove bottom portion of the dividing groove.
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公开(公告)号：DE602005001390T2
公开(公告)日：2008-02-21
申请号：DE602005001390
申请日：2005-07-29
Applicant: TOSHIBA KK , INT SUPERCONDUCTIVITY TECH
Inventor： ARAKI TAKESHI , NAKAO KOICHI , HIRABAYASHI IZUMI
Abstract: The present invention relates to a method of preparing an oxide superconducting film, the method includes reacting a metal acetate containing metal M selected from the group consisting of lanthanum, neodymium and samarium with fluorocarboxylic acid having not less than three carbon atoms, reacting barium acetate with fluorocarboxylic acid having two carbon atoms, reacting copper acetate with fluorocarboxylic acid having not less than two carbon atoms, respectively, followed by refining reaction products, dissolving the reaction products in methanol such that a molar ratio of the metal M, barium and copper is 1:2:3 to prepare a coating solution, and coating a substrate with the coating solution to form a gel film, followed by calcining and firing the gel film to prepare an oxide superconducting film.
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公开(公告)号：DE602005001390D1
公开(公告)日：2007-07-26
申请号：DE602005001390
申请日：2005-07-29
Applicant: TOSHIBA KK , INT SUPERCONDUCTIVITY TECH
Inventor： ARAKI TAKESHI , NAKAO KOICHI , HIRABAYASHI IZUMI
Abstract: The present invention relates to a method of preparing an oxide superconducting film, the method includes reacting a metal acetate containing metal M selected from the group consisting of lanthanum, neodymium and samarium with fluorocarboxylic acid having not less than three carbon atoms, reacting barium acetate with fluorocarboxylic acid having two carbon atoms, reacting copper acetate with fluorocarboxylic acid having not less than two carbon atoms, respectively, followed by refining reaction products, dissolving the reaction products in methanol such that a molar ratio of the metal M, barium and copper is 1:2:3 to prepare a coating solution, and coating a substrate with the coating solution to form a gel film, followed by calcining and firing the gel film to prepare an oxide superconducting film.
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