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

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)

Abstract

We demonstrate the fabrication of superconducting SmFeAsO 1-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.

Original languageEnglish
Article number063102
JournalApplied Physics Express
Volume4
Issue number6
DOIs
Publication statusPublished - 2011 Jun

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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