Fabrication of MgB2 superconducting wire by in situ PIT method

T. Machi, S. Shimura, N. Koshizuka, M. Murakami

Research output: Contribution to journalConference articlepeer-review

31 Citations (Scopus)


We have fabricated the MgB2 superconducting wire with a copper sheath by using an in situ synthesis powder in tube (PIT) method. The diameter of MgB2 wire was reduced down to 0.5 mm. MgB2 coil with 27 mmØ inner diameter and 3.5 m length was made using this wire. In the first current raising process, the critical current (Ic) of the coil was 76 A at 4.2 K in self-field which corresponded to Jc ≈ 170, 000 A/cm2 and Je ≈ 40,000 A/cm2 was achieved in magnetic field of H ≈ 0.14 T. In the second run, the coil did not quench at the maximum current of 200 A, which corresponded to Jc ≈ 440,000 A/cm2, Je ≈ 100,000 A/cm2 and H ≈ 0.37 T.

Original languageEnglish
Pages (from-to)1039-1042
Number of pages4
JournalPhysica C: Superconductivity and its applications
Issue numberPART 2
Publication statusPublished - 2003 Oct
Externally publishedYes
EventProceedings of the 15th International Symposium on Superconduc - Yokohama, Japan
Duration: 2002 Nov 112002 Nov 13


  • In situ PIT
  • MgB
  • Superconducting wire

ASJC Scopus subject areas

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


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