Share

History effect of critical current density and weak links in superconducting lead-BSCCO tape wires.

Author(s) : MATSUSHITA T., OTABE E. S., NI B., HIKATA T., SATO K.

Type of article: Article

Summary

Critical current density and its history effect in bismuth-based high-critical temperature superconducting tapes were measured using an alternating current inductive method with various magnetic fields and temperatures. A rapid decrease in the critical current density with increasing temperature and the history effect were observed in the same low temperature region between 4.2 and 30 K. This suggests that the two phenomena are caused by low temperature weak links in the specimens. A weak link region is considered to lose superconductivity at temperatures higher than 30 K. Above 30 K, a strongly bonded area retains superconductivity and the critical current density changes slowly with increasing temperature, showing no history effect.

Details

  • Original title: History effect of critical current density and weak links in superconducting lead-BSCCO tape wires.
  • Record ID : 1993-1850
  • Languages: English
  • Source: Cryogenics - vol. 31 - n. 11
  • Publication date: 1991/11

Links


See other articles in this issue (7)
See the source

Indexing