Preparation of granular Bi-2212 nanowires by electrospinning

Xian Lin Zeng, Michael R. Koblischka, Thomas Karwoth, Thomas Hauet, Uwe Hartmann

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11 Citations (Scopus)

Abstract

Bi2Sr2CaCu2O8 (Bi-2212) superconducting nanowires are synthesized by the electrospinning method. Two different precursors were employed to grow the nanowires, a Pb-doped one and a Cu,Ca-enriched one. The granular polycrystalline character was confirmed by scanning electron microscopy and x-ray diffraction measurement. The magnetic and electric properties of the samples were investigated via SQUID magnetometry and four-probe resistance measurements. The superconducting transition temperatures of the two systems were found to be similar (Pb-doped 84 K, Cu,Ca-enriched 76 K), but the transition width and the onset of irreversibility were clearly different. The magnetization loops and the resistance data demonstrate that the Cu,Ca-enriched precursor yields samples with better superconducting properties.

Original languageEnglish
Article number035014
JournalSuperconductor Science and Technology
Volume30
Issue number3
DOIs
Publication statusPublished - 2017 Mar

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Keywords

  • Bi-2212
  • doping
  • electrospinning
  • high-T
  • nanowire
  • superconductor

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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