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Fabrication and evaluation of small coils using lead-molybdenum(6)-sulphur(8) (PMS) wires.

Author(s) : KUBO Y., UCHIKAWA F., UTSUNOMIYA S., NOTO K., KATAGIRI K., KOBAYASHI N.

Type of article: Article

Summary

Small three-layer coils with two kinds of mandrels: aluminium oxide and magnesium oxide, were fabricated using Chevrel-phase PMS superconducting wires prepared by a powder process. An excellent critical-current density of 3 x 10000 A/cm2 at B = 12 T was obtained with a magnesium oxide mandrel (84% of the best critical-current densities for the same short wire). With aluminium oxide, the critical-current density was only 60%. The thermal expansion coefficient and critical-currents strain property of the PMS wires were also determined. The origin of critical-current density degradation for the small coils was found to be the strain applied from mandrels during the cooling process.

Details

  • Original title: Fabrication and evaluation of small coils using lead-molybdenum(6)-sulphur(8) (PMS) wires.
  • Record ID : 1994-2742
  • Languages: English
  • Source: Cryogenics - vol. 33 - n. 9
  • Publication date: 1993/09

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