High Ic in iron-clad MgB2 tape

H. Fang, S. Padmanabhan, Y. X. Zhou, P. T. Putman, K. Salama

Research output: Contribution to journalConference articlepeer-review

6 Scopus citations

Abstract

Recent studies on metal-clad superconducting MgB2 wires indicates that iron is one of the best candidates as a cladding metal. Also it was found that grain refinement of MgB2 leads to more compacted material which yields high transport critical current density. In this study, we prepared the iron-clad MgB2 tapes by using the powder-in-tube technique. A modified rolling process was applied to cold work the powder-filled tubes into tapes. Very fine grains were observed on as-rolled tapes. Tapes manufactured using this process were found to carry 260 Ampere at 20 K under self-field and 180 Ampere under 1.5 Tesla. The transition temperature is 39.4 K and ΔT = 0.6 K. The results indicate that grain refinement is very effective in improving the current carrying capability of the MgB2 tapes.

Original languageEnglish (US)
Pages (from-to)3207-3209
Number of pages3
JournalIEEE Transactions on Applied Superconductivity
Volume13
Issue number2 III
DOIs
StatePublished - Jun 1 2003
Event2002 Applied Superconductivity Conference - Houston, TX, United States
Duration: Aug 4 2002Aug 9 2002

Keywords

  • Critical current
  • Magnesium diboride
  • Powder-in-tube
  • Superconducting tape

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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