Intergranular and intragranular currents in (Bi,Pb)2Sr2Ca2Cu3O10+x superconductors: Temperature dependence in low magnetic fields

Jaakko Paasi, Peter Kottman, Milan Majoroš, Vladimir Plecháček

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)

Abstract

The temperature dependence of intergranular and intragranular currents in (Bi,Pb)2Sr2Ca2Cu3O10+x superconductors was studied in low magnetic fields. In order to distinguish the two kinds of currents, the experiments were performed with two samples of similar grains: a bulk sample of well-coupled grains, and a sample without intergranular coupling (powder sample). The temperature dependence of intragranular currents exhibited a behaviour typical for S-N-S (superconductor-normal metal-superconductor) junctions. For intergranular currents the temperature dependence suggested a limitation due to thermally activated flux creep in the space between the superconducting grains.

Original languageEnglish
Pages (from-to)21-25
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Volume305
Issue number1-2
DOIs
Publication statusPublished - Sep 1998
MoE publication typeA1 Journal article-refereed

Keywords

  • Critical current density
  • Granular superconductivity
  • Magnetization

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