Ac losses and low-field superconducting behavior of Nb3Sn

R. E. Howard, R. H. Norton, M. R. Beasley

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Measurements have been made of the low-field ac and dc superconducting properties of thin films of electron-beam-evaporated Nb3Sn. Comparison of the 50-Hz hysteretic loss and flux entry waveforms with the measured field-dependent critical current indicates that a modification of the usual critical state model with a uniform surface barrier is necessary. A model based upon a nonuniform flux distribution, consistent with the observed morphology, is presented. Its success in describing the low-field properties of this sytem and its importance to related materials in which the superconducting properties are strongly dependent upon the microstructure are discussed.

Original languageEnglish (US)
Pages (from-to)5443-5446
Number of pages4
JournalJournal of Applied Physics
Issue number12
StatePublished - 1976
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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