Physics – Condensed Matter – Superconductivity
Scientific paper
2011-06-07
Supercond. Sci. Technol. 24 (2011) 075024
Physics
Condensed Matter
Superconductivity
Scientific paper
We demonstrate the fabrication of superconducting SmFeAsO1-xFx (Sm-1111) wires by using the ex-situ powder-in-tube technique. Sm-1111 powder and a binder composed of SmF3, samarium arsenide, and iron arsenide were used to synthesize the superconducting core. Although the F content of Sm-1111 is reduced in the process of ex-situ fabrication, the binder compensates by sufficiently supplementing the F content, thereby preventing a decrease in the superconducting transition temperature and a shrinking of the superconducting volume fraction. Thus, in the superconducting Sm-1111 wire with the binder, the transport critical current density reaches the highest value of ~4000 A/cm2 at 4.2 K.
Fujioka Masaya
Kamihara Yoichi
Kumakura Hiroaki
Matoba Masanori
Ozaki Toshinori
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