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IRON-CONTAINING SUPERCONDUCTIVE SUBSTANCE, AND METHOD FOR PRODUCING SAME

外国特許コード F150008377
掲載日 2015年7月13日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2014JP072770
国際公開番号 WO 2015045733
国際出願日 平成26年8月29日(2014.8.29)
国際公開日 平成27年4月2日(2015.4.2)
優先権データ
  • 特願2013-199997 (2013.9.26) JP
発明の名称 (英語) IRON-CONTAINING SUPERCONDUCTIVE SUBSTANCE, AND METHOD FOR PRODUCING SAME
発明の概要(英語) The purpose of the present invention is to provide an iron-containing superconductive substance comprising an interlayer substance having a low rare earth element content. A superconductive substance which is characterized by being represented by the chemical formula: Ca1-xRxFeAs2, being of a CaFeAs2 type, and having a crystal structure of a space group P21, wherein R represents at least one light rare earth element selected from La, Ce, Pr and Nd and the atomic ratio (x) is 0.08 to 0.24 inclusive (i.e., 0.08 ≤ x ≤ 0.24). The CaFeAs2-type structure is a structure in which a FeAs layer and a Ca1-xRxAs layer are laminated alternately, the Ca1-xRxAs layer comprises a three-layer interlayer substance, i.e., (a Ca1-xRx layer)-(an As2 layer)-(a Ca1-xRx layer), and R is doped to produce the superconductive substance.
  • 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
  • OKAYAMA UNIVERSITY
  • NAGOYA UNIVERSITY
  • TOKYO INSTITUTE OF TECHNOLOGY
  • 発明者(英語)
  • SAWA HIROSHI
  • KATAYAMA NAOYUKI
  • HOSONO HIDEO
  • NOHARA MINORU
  • KUDO KAZUTAKA
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 DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JP KE KG KN KP KR KZ LA LC LK LR LS LT 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 TD TG
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