Anomalous position of the maximum in magnetic hysteresis loops measured on (Bi,Pb)2Sr2Ca2Cu3O10/Ag tapes

M. R. Koblischka, L. Půst, A. Galkin, P. Nálevka

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Abstract

An anomalous position of the central peak of magnetic hysteresis loops is observed in (Bi,Pb)-2223/ Ag tapes at positive external fields Bext for dBext/dr<0. We model the grain structure by a system of superconducting disk-shaped grains touching each other in small, but highly conducting contacts at the disk circumferences. The sign of the internal field Bi at the circumference of large, thin well oriented grains in the tape plays an important role. While in great majority of the sample volume Bi, is delayed behind Bext, just at the grain circumferences Bi might be considerably ahead of Sext. Based on these considerations, a model sample which should exhibit similar features of the central peak is proposed.

Original languageEnglish
Pages (from-to)514-516
Number of pages3
JournalApplied Physics Letters
Volume70
Issue number4
DOIs
Publication statusPublished - 1997 Jan 27

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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