DocumentCode :
1378328
Title :
Transport Properties of Iron-Based 
Superconducting Wire
Author :
Ozaki, Toshinori ; Deguchi, Keita ; Mizuguchi, Yoshikazu ; Kumakura, Hiroaki ; Takano, Yoshihiko
Author_Institution :
Supercond. Mater. Center, Nat. Inst. for Mater. Sci., Tsukuba, Japan
Volume :
21
Issue :
3
fYear :
2011
fDate :
6/1/2011 12:00:00 AM
Firstpage :
2858
Lastpage :
2861
Abstract :
FeTe0.5Se0.5 superconducting wires have been fabricated using ex-situ PIT method with an Fe sheath. Among the other FeAs-based superconductors, FeTe0.5Se0.5 has great advantage for applications due to its binary composition and less toxicity. Surprisingly, superconducting current was observed in the as-fabricated wire without any heat treatments. The zero- resistivity critical temperature (Tczero) and transport critical current density (Jc) at 2 K were 3.2 K and 2.8 A/cm2, respectively. In addition, by annealing at 200°C for 2 h, Tczero and Jc were enhanced up to 9.1 K, and 64.1 A/cm2 , respectively. This suggests that the inter-grain connectivity was improved by heat treatment, and superconducting properties of FeTe0.5Se0.5 wire were enhanced.
Keywords :
critical current density (superconductivity); iron compounds; superconducting materials; superconducting thin films; superconducting transition temperature; wires; Fe sheath; FeAs-based superconductors; FeTe0.5Se0.5; FeTe0.5Se0.5 superconducting wire; superconducting current; transport critical current density; transport properties; zero- resistivity critical temperature; Conductivity; Heat treatment; Iron; Superconducting filaments and wires; Temperature dependence; Wire; ${rm FeTe}_{0.5}{rm Se}_{0.5}$ ; Critical current density; critical temperature; superconducting wires;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2010.2086031
Filename :
5635360
Link To Document :
