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Layered compound, superconductor and method for producing same

Foreign code F110003553
File No. BE06009WO
Posted date Jun 29, 2011
Country United States of America
Application number 00314909
Gazette No. 20110111965
Gazette No. 8288321
Date of filing Jul 9, 2009
Gazette Date May 12, 2011
Gazette Date Oct 16, 2012
International application number JP2009062500
International publication number WO2010007929
Date of international filing Jul 9, 2009
Date of international publication Jan 21, 2010
Priority data
  • P2008-184843 (Jul 16, 2008) JP
  • 2009WO-JP62500 (Jul 9, 2009) WO
Title Layered compound, superconductor and method for producing same
Abstract (US8288321)
Provides a new non-oxide system compound material superconductor as an alternative of the perovskite type copper oxides superconductor.
Layered compounds which are represented by chemical formula AF(TM)Pn (wherein, A is at least one selected from a group consisting of the second family elements in the long form periodic table, F is a fluorine ion, TM is at least one selected from a group of transition metal elements consisting of Fe, Ru, Os, Ni, Pd, and Pt, and Pn is at least one selected from a group consisting of the fifteenth family elements in the long form periodic table), having a crystal structure of ZrCuSiAs type (space group P4/nmm) and which become superconductors by doping trivalent cations or divalent anions.
Scope of claims [claim1]
1. A layered compound represented by chemical formula:
AF(TM)Pn
wherein A is at least one selected from a group consisting of the 2nd family elements in the long form periodic table, F is a fluorine ion,
TM is at least one selected from a group of transition metal elements consisting of Fe, Ru, Os, Ni, Pd, and Pt, and
Pn is at least one selected from a group consisting of the 15th family elements in the long form periodic table, and
wherein the layered compound has a crystal structure of ZrCuSiAs type (space group P4/nmm) and that the layered compound becomes superconductive by doping trivalent cations or divalent anions.
[claim2]
2. The layered compound of claim 1, wherein A is at least one selected from a group consisting of Ca and Sr, TM is either Ni or Fe, and Pn is at least one selected from a group consisting of P, As, and Sb.
[claim3]
3. The layered compound of claim 1, wherein the layered compound is doped with a trivalent cation of an element selected from a group consisting of Sc, Y, La, Nd, and Gd.
[claim4]
4. The layered compound of claim 1, wherein the layered compound is doped with a divalent anion of an element selected from a group consisting of O, S, and Se.
[claim5]
5. A method of manufacturing a layered compound represented by chemical formula: AF(TM)Pn, wherein A is at least one selected from a group consisting of the 2nd family elements in the long form periodic table, F is a fluorine ion, TM is at least one selected from a group of transition metal elements consisting of Fe, Ru, Os, Ni, Pd, and Pt, and Pn is at least one selected from a group consisting of the 15th family elements in the long form periodic table, and wherein the layered compound has a crystal structure of ZrCuSiAs type (space group P4/nmm) and that the layered compound becomes superconductive by doping trivalent cations or divalent anions, the method comprising: mixing powders of element A, TM element, Pn element, and at least one fluorine compound selected from a group consisting of fluorine compounds of element A, fluorine compounds of TM element, and fluorine compounds of Pn element, and
sintering the mixed powders at 900 to 1200 deg C. in an inert gas ambient or in a vacuum.
[claim6]
6. The method according to claim 5, wherein the layered compound is doped with a trivalent cation of an element selected from a group consisting of Sc, Y, La, Nd, and Gd, and
in the mixing step, the powders include powder of element of the trivalent cations cation or powder of fluorine compound of element of the trivalent cation.
[claim7]
7. The method according to claim 5, wherein the layered compound is doped with a divalent anion of an element selected from a group consisting of O, S, and Se, and
in the mixing step, the powders include at least one powder of oxide of A element, sulfide of A element, selenide of A element, sulfur, and selenium.
[claim8]
8. A super conductor comprised of the layered compound according to claim 3.
[claim9]
9. A super conductor comprised of the layered compound according to claim 4.
  • Inventor, and Inventor/Applicant
  • HOSONO HIDEO
  • YANAGI HIROSHI
  • KAMIYA TOSHIO
  • MATSUISHI SATORU
  • KIM SUNGWNG
  • YOON SEOK GYU
  • HIRAMATSU HIDENORI
  • HIRANO MASAHIRO
  • NOMURA TAKATOSHI
  • KAMIHARA YOICHI
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
IPC(International Patent Classification)
Reference ( R and D project ) ERATO/SORST Exploring and developing applications for active functions utilizing nanostructure embedded in transparent oxides AREA
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