Comparison of projected critical currents in PbMo6S8 and Nb3Ge

S. A. Alterovitz, J. A. Woollam

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

Critical current densities, Jc, of sputtered Chevrel phase PbMo6S8 films have been measured as a function of field to 19 T at several temperatures. The pinning forces were found to obey a scaling law. Assuming an effective upper critical field Bc2 = 45 T, an effective critical temperature Tc = 13 K, together with empirical estimates of numerical factors in the scaling law, we estimate the upper limits for critical current density Jc in PbMo6S8. Comparisons are made to estimates of Jc for Nb3Ge at 4.2 K. A crossover of Jc 108 A m-2) vs B is found for B of the order of 25 to 30 T. Below this point, Nb3Ge is projected to have a higher critical current density. Thus practical use of Chevrel materials in high field magnets only appears to be competitive with Nb3Ge for fields above 25 to 30 T.

Original languageEnglish (US)
Pages (from-to)167-169
Number of pages3
JournalCryogenics
Volume19
Issue number3
DOIs
StatePublished - Mar 1979

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

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