Effect of starting materials on the superconducting properties of SmFeAsO 1-xF x tapes

Chunlei Wang, Chao Yao, Xianping Zhang, Zhaoshun Gao, Dongliang Wang, Chengduo Wang, He Lin, Yanwei Ma, Satoshi Awaji, Kazuo Watanabe

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


SmFeAsO 1-xF x tapes were prepared using three kinds of starting materials. This showed that the starting materials have an obvious effect on the impurity phases in the final superconducting tapes. Compared with the other samples, the samples fabricated with SmAs, FeO, Fe 2As, and SmF 3 have the smallest arsenide impurity phases and voids. As a result, these samples possess much denser structures and better grain connectivities. Moreover, among the three kinds of sample fabricated in this work, this kind of sample has the highest zero resistivity temperature, ∼40K, and the largest critical current density, ∼4600Acm -2, in self-field at 4.2K. This is the highest J c value reported so far for SmFeAsO 1-xF x wires and tapes.

Original languageEnglish
Article number035013
JournalSuperconductor Science and Technology
Issue number3
Publication statusPublished - 2012 Mar

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry


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