Transport properties of iron-based FeTe0.5Se0.5 superconducting wire

Details Transport properties of iron-based FeTe0.5Se0.5 superconducting wire Transport properties of iron-based FeTe0.5Se0.5 superconducting wire

2010-08-09

arxiv.org/abs/1008.1447v3

IEEE Trans. Appl. Supercond. 21, 2858 (2011)

Physics

Condensed Matter

Superconductivity

text 4 pages, 5 figures, 1 table

Scientific paper

10.1016/j.physc.2011.05.018

FeTe0.5Se0.5 superconducting wires have been fabricated using ex-situ PIT method with an Fe sheath. Among the other FeAs-based superconductor, FeTe0.5Se0.5 has great advantage for application due to binary composition and less toxic. Surprisingly, superconducting current was observed in the as-fabricated wire without any heat treatments. Zero resistivity and transport critical current density (Jc) were 3.2 K and 2.8 A/cm2, respectively. In addition, by annealing at 200 degC for 2 h, critical temperature Tczero and Jc were enhanced up to 9.1 K, and 64.1 A/cm2, respectively. This suggests that the grain connectivity was improved by heat treatment, and superconducting property of FeTe0.5Se0.5 wire was enhanced.

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