Pinning force scaling of electrospun Bi-2212 nanowire networks

Michael R. Koblischka, Denis Gokhfeld, Crosby Chang, Thomas Hauet, Uwe Hartmann

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Flux pinning forces were determined on different network samples of superconducting Bi2Sr2CaCu2O8 (Bi-2212) nanowires prepared by the electrospinning technique. We employed magnetization data determined by SQUID magnetometry in a wide temperature range 10 K <T< 35 K, where a strong superconducting signal prevails. The scaling analysis of the pinning forces was applied to interprete the data obtained. Both pure and Li-doped Bi2212 nanowire networks exhibit a peak position of h0∼ 0.11, which is smaller than the expected value of h0= 0.2 indicating flux pinning at grain boundaries or extended defects. For the flowing currents through such a network, the crystallographic anisotropy and the percolation play an important role, resulting in reduced peak positions as compared to bulk samples.

Original languageEnglish
Pages (from-to)16-18
Number of pages3
JournalSolid State Communications
Volume264
DOIs
Publication statusPublished - 2017 Sep

Keywords

  • A. Bi-2212 superconductors
  • B. Electrospinning
  • D. Flux pinning
  • D. Pinning force scaling

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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