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arXiv · 1105.3342

Effective Ex-Situ Fabrication of F-Doped SmFeAsO Wire for High Transport Critical Current Density

Masaya Fujioka·Tomohiro Kota·Masanori Matoba·Toshinori Ozaki·Yoshihiko Takano·Hiroaki Kumakura·Yoichi Kamihara
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Abstract

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 shrinkage 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 ~4 kA/cm2 at 4.2 K.

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Masaya Fujioka, Tomohiro Kota, Masanori Matoba, Toshinori Ozaki, Yoshihiko Takano, Hiroaki Kumakura, Yoichi Kamihara. 2011-06-29. Effective Ex-Situ Fabrication of F-Doped SmFeAsO Wire for High Transport Critical Current Density. https://doi.org/10.1143/apex.4.063102

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