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High upper critical field and irreversibility field in MgB 2 coated-conductor fibers

  • V. Ferrando
  • , P. Orgiani
  • , A. V. Pogrebnyakov
  • , J. Chen
  • , Qi Li
  • , J. M. Redwing
  • , X. X. Xi
  • , J. E. Giencke
  • , Chang Beom Eom
  • , Qing Rong Feng
  • , J. B. Betts
  • , C. H. Mielke

Research output: Contribution to journalArticlepeer-review

Abstract

We report on structural and superconducting properties of round MgB2 coated-conductor fibers deposited by hybrid physical-chemical vapor deposition on SiC fibers. The coating is polycrystalline and composed of elongated crystallites with dimensions less than 1 μm in length and 0.2 μm in width. The pure MgB2 fiber shows a zero-resistance Tc of 39.3 K. The carbon-alloyed fibers show a high upper critical field of 55 T at 1.5 K and a high irreversibility field of 40 T at 1.5 K. The result demonstrates great potential of MgB2 coated conductors for superconducting magnets.

Original languageEnglish (US)
Article number252509
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Volume87
Issue number25
DOIs
StatePublished - 2005

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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