Share

Critical-current density in superconducting niobium-titanium under proximity effect.

Author(s) : OTABE E. S., MATSUSHITA T.

Type of article: Article

Summary

It has been found that the critical-current density in a multifilamentary superconducting niobium-titanium wire first increases and then reaches a peak, while the critical temperature decreases monotonically as the superconducting filament diameter is decreased by drawing to the submicrometre range. In the paper the elementary pinning force of alpha-titanium ribbons is theoretically estimated for idealized multilayers of superconducting and normal regions, and critical-current density is calculated from a statistical summation of the elementary pinning interactions. The theoretical result predicts that critical-current density increases monotonically with drawing, owing to the increase in density of pin points, in spite of the decrease in pinning force. The reason for the observed degradation of critical-current density is discussed.

Details

  • Original title: Critical-current density in superconducting niobium-titanium under proximity effect.
  • Record ID : 1994-0036
  • Languages: English
  • Source: Cryogenics - vol. 33 - n. 5
  • Publication date: 1993/05

Links


See other articles in this issue (16)
See the source

Indexing