IRON-CONTAINING SUPERCONDUCTIVE SUBSTANCE, AND METHOD FOR PRODUCING SAME

WIPO Patent Application WO/2015/045733

A1

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.

SAWA HIROSHI (JP)
KATAYAMA NAOYUKI (JP)
HOSONO HIDEO (JP)
NOHARA MINORU (JP)
KUDO KAZUTAKA (JP)

PCT/JP2014/072770

April 02, 2015

August 29, 2014

Click for automatic bibliography generation  

UNIV OKAYAMA NAT UNIV CORP (JP)
UNIV NAGOYA NAT UNIV CORP (JP)
TOKYO INST TECH (JP)

C22C28/00; C22C1/00; C22C1/02; H01B12/02; H01B13/00

WO2010007929A1	2010-01-21
WO2009104611A1	2009-08-27
WO2012018850A1	2012-02-09

JP2009234847A	2009-10-15
JP2012066960A	2012-04-05

J. H. SHIM ET AL.: "Density-functional calculations of the electronic structures and magnetism of the pnictide superconductors BaFeAs2 and BaFeSb2", PHYSICAL REVIEW B, vol. 79, pages 060501 - 1 -060501-4

NISHI YOSHIYUKI (JP)
West Yoshiyuki (JP)

View/Download PDF      PDF Help

Previous Patent: PRESSURE SHOCK ABSORBING DEVICE AND DAMPING FORCE GENERATING MECHANISM

Next Patent: IMPACT TOOL