Persistent currents in ceramic and evaporated thin-film toroids of Ba 2YCu3O7

E. M. Gyorgy, G. S. Grader, D. W. Johnson, Leonard C Feldman, D. W. Murphy, W. W. Rhodes, R. E. Howard, P. M. Mankiewich, W. J. Skocpol

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

We have demonstrated the existence of circumferential persistent currents in Ba2YCu3O7 ceramic toroids at 77 and 4.2 K and in thin films at 77 K. The field dependence of the critical current densities obtained from these persistent current measurements at 77 K is in fair agreement with that obtained from transport measurements. The persistent critical current densities for fields less than 10 G are 150 A/cm2 for the ceramic at 77 K and 105 A/cm2 for the thin film. A long term experiment showed that the resistivity is less than 3×10 -18 Ω cm at 77 K.

Original languageEnglish
Pages (from-to)328-330
Number of pages3
JournalApplied Physics Letters
Volume52
Issue number4
DOIs
Publication statusPublished - 1988

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toroids
critical current
ceramics
current density
thin films
electrical resistivity

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Gyorgy, E. M., Grader, G. S., Johnson, D. W., Feldman, L. C., Murphy, D. W., Rhodes, W. W., ... Skocpol, W. J. (1988). Persistent currents in ceramic and evaporated thin-film toroids of Ba 2YCu3O7 . Applied Physics Letters, 52(4), 328-330. https://doi.org/10.1063/1.99454

Persistent currents in ceramic and evaporated thin-film toroids of Ba 2YCu3O7 . / Gyorgy, E. M.; Grader, G. S.; Johnson, D. W.; Feldman, Leonard C; Murphy, D. W.; Rhodes, W. W.; Howard, R. E.; Mankiewich, P. M.; Skocpol, W. J.

In: Applied Physics Letters, Vol. 52, No. 4, 1988, p. 328-330.

Research output: Contribution to journalArticle

Gyorgy, EM, Grader, GS, Johnson, DW, Feldman, LC, Murphy, DW, Rhodes, WW, Howard, RE, Mankiewich, PM & Skocpol, WJ 1988, 'Persistent currents in ceramic and evaporated thin-film toroids of Ba 2YCu3O7 ', Applied Physics Letters, vol. 52, no. 4, pp. 328-330. https://doi.org/10.1063/1.99454
Gyorgy, E. M. ; Grader, G. S. ; Johnson, D. W. ; Feldman, Leonard C ; Murphy, D. W. ; Rhodes, W. W. ; Howard, R. E. ; Mankiewich, P. M. ; Skocpol, W. J. / Persistent currents in ceramic and evaporated thin-film toroids of Ba 2YCu3O7 . In: Applied Physics Letters. 1988 ; Vol. 52, No. 4. pp. 328-330.
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AU - Murphy, D. W.

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AU - Howard, R. E.

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