Enhancement of the high-field J c properties of MgB 2/Fe tapes by acetone doping

Dongliang Wang, Yanwei Ma, Zhaoshun Gao, Xianping Zhang, Lei Wang, Eric Mossang, Gen Nishijima, Satoshi Awaji, Kazuo Watanabe

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We report the effect of acetone addition on in situ powder-in-tube processed MgB 2/Fe tapes by using acetone as liquid additive. The amount of acetone was varied from 0 to 15 wt.%. We found that a significant J c-B enhancement was easily achieved in high field by acetone doping. At 4.2 K, the transport J c for the best acetone added tapes (5 wt.%) reached up to 2.4×10 4 A/cm 2 at 10 T. With increasing acetone concentration, the a-axis lattice parameters, B c2 and B irr, were not much changed; however, the insulating MgO impurities and pores gradually increased, thereby resulting in the obvious decrease of J c values for 10 and 15 wt.% acetone-added samples, especially within low field region.

Original languageEnglish
Pages (from-to)671-676
Number of pages6
JournalJournal of Superconductivity and Novel Magnetism
Volume22
Issue number7
DOIs
Publication statusPublished - 2009 Oct

Keywords

  • Acetone doping
  • Critical current density
  • MgB
  • Superconducting tape

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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