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METHOD FOR MANUFACTURING CONDUCTOR, CONDUCTOR, SUPERCONDUCTING TRANSMISSION LINE, SUPERCONDUCTING MAGNET DEVICE, AND SUPERCONDUCTING MAGNETIC SHIELDING DEVICE

外国特許コード F200010193
整理番号 (S2018-0929-N0)
掲載日 2020年7月29日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2019JP040192
国際公開番号 WO 2020080279
国際出願日 令和元年10月11日(2019.10.11)
国際公開日 令和2年4月23日(2020.4.23)
優先権データ
  • 特願2018-194258 (2018.10.15) JP
発明の名称 (英語) METHOD FOR MANUFACTURING CONDUCTOR, CONDUCTOR, SUPERCONDUCTING TRANSMISSION LINE, SUPERCONDUCTING MAGNET DEVICE, AND SUPERCONDUCTING MAGNETIC SHIELDING DEVICE
発明の概要(英語) This method for manufacturing a conductor involves forming a first layer which comprises a first compound represented by the compositional formula (Chem. 1) on at least a surface of a starting material that includes iron, the method including a step S4 of bringing the starting material into contact with a gas (G1) that includes a first element E1 and a second element E2. (Chem. 1) (AE1-xAx)(Fe1-yTMy)2(As1-zPz)2... AE is an alkali earth metal element, A is an alkali metal element, and TM is a transition metal element. x satisfies 0≤x<1, y satisfies 0≤y<0.5, and Z satisfies 0≤z<0.8. The first element E1 includes AE and the second element includes arsenic.
従来技術、競合技術の概要(英語) BACKGROUND ART
Tc is the critical temperature of the iron-based superconductor, for example about 58K, copper oxide based superconductor with high critical temperature and then. Moreover, an iron-based superconductor of the upper critical magnetic field Hc2 is, for example greater than 100T, copper oxide based superconductor of the upper critical magnetic field and then large. Therefore, the iron-based superconductor, the superconducting magnet apparatus for generating a magnetic field strength and the like, are expected to be applied to a strong magnetic field.
Such as an iron-based superconductor, such as iron (Fe) and arsenic (As) a compound of Group 15 and the second iron pnictide are known, as the alkaline earth metal element is iron pnictide, (AE,A) (Fe,TM) 2(As,Pn) 2(AE, A represents an alkali metal element, TM is a transition metal element, Pn is a pnictogen element) has been known. Among these, is BaFe2As2, a composition of one of the above-described (AE,A) (Fe,TM) 2(As,Pn) 2, also referred to as Ba122.
Is the non-patent document 1, an iron-based superconductor in which Ba (Fe1-xCox) of the upper critical magnetic field of Hc2 2As2 single crystal is anisotropic, the order of 2, copper oxide based superconductor is smaller than the anisotropy has been described. Therefore, the iron-based superconductor of the superconducting sintered for a bulky, each of the two adjacent 2 crystal grains of the orientation of the angle of direction even when positioned away from 0°, one crystal grain 2 of the interface between the critical current density flows across does not decrease. Therefore, the iron-based superconductor of the superconducting sintered for a bulky, when forming the superconducting bulky, the orientation of the crystal grains because there is no need to control the direction, the size of the superconducting can be easily formed a bulky.
Japanese Patent Laid-Open Patent Publication 2017-82318 (Patent Document 1) in, Formula AA 'in the iron-based compounds represented by Fe4As4, and Ca in the A, A' is K, Cs and Rh and at least one element selected from 1, or, at least one selected from Eu and Sr A is an element of which, A 'is at least one selected from the group consisting of Rb and Cs 1 in which the element, and layer AFe2As2 A' are alternately laminated Fe2As2 layer has a crystal structure, crystal structure of space group, simple tetragonal P4/mmm has been disclosed a technique.
Japanese Patent Laid-Open Patent Publication 2014-227329 (Patent Document 2) is, in the iron-based superconducting material, having the crystal structure of the iron-based superconducting ThCr2Si2 body, BaXO3 (X is Zr, Sn, Hf, Ti of the one or more of the species 2 1) less than or equal to 30nm in particle size and, the volume density of the nano-particles 1x1021m-3 are dispersed in one or more disclosed techniques.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • TOKYO INSTITUTE OF TECHNOLOGY
  • TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY
  • 発明者(英語)
  • YAMAMOTO, Akiyasu
  • UEMURA, Toshiki
国際特許分類(IPC)
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JO JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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