Local magnetization measurements on Bi2Sr2Ca2Cu3O10 tapes

Y. Radzyner, Y. Abulafia, Y. Yeshurun, T. Staiger, G. Fuchs

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Global transport measurements and local Hall-probe array measurements of a section of silver clad BSCCO tape, are reported. Transport measurements are in good agreement with the 'brick wall' model. The induction profiles obtained from magnetic measurements agree with the assumption of a uniform bulk current at low (40-60 K) temperatures. At higher temperatures and relatively high fields (700 G and up) local measurements seem to reveal the existence of surface currents. These currents are the result of small current loops, flowing within the grains, which result in a net current only at the edges of the sample. Thus, the local magnetic measurements do not agree with global transport ones, and we contend that the 'brick wall' model aptly describes the flow of transport currents, but fails to describe the flow of currents induced by an external magnetic field.

Original languageEnglish
Pages (from-to)165-176
Number of pages12
JournalPhysica C: Superconductivity and its Applications
Issue number3-4
StatePublished - 20 Oct 1998

Bibliographical note

Funding Information:
We would like to thank Eli Zeldov for discussions and H. Shtrikman for growing the GaAs heterostructures. This research was partially supported by the Israel Science Foundations, by the Heinrich Hertz Minerva Center for High Temperature Superconductivity and by Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie. Y.Y. acknowledges a support from the Ministry of Energy and Infrastructure and from the Ministry of Science and Technology.


  • Critical current density
  • Flux creep
  • Granular material
  • Local measurements
  • Magnetic measurements
  • Weak links


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