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<p>We report significant improvements in the superconducting characteristics of yttrium barium copper oxide (YBa₂Cu₃O₇₋<sub>δ</sub>, YBCO) by incorporating barium zirconate (BaZrO₃, BZO) and multi-walled carbon nanotubes (MWCNTs) into an innovative core-shell nanofiber architecture. Fabricated via coaxial electrospinning, this approach enables precise control over the nanofiber composition and morphology. Integrating 3 wt% BZO into YBCO@CNT nanofibers (which include 3 wt% MWCNTs) enhances superconducting performance by increasing the activation energy (U₀), critical current density (J<sub>c</sub>), and marginally raising the superconducting transition temperature (T<sub>c</sub>). The enhancements arise from improved inter-grain interaction, less lattice strain, and better flux pinning, enabled by the MWCNT network and BZO nanoparticles.</p> Graphical Abstract <p></p>

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Engineering superconducting characteristics of electrospun YBCO@CNT core-shell nanofibers through BZO doping

  • 期刊论文

  • 发表日期：

    2026年3月12日

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  • Mohammed Ahmed Mohammed,
  • Nouf Alharbi,
  • Ismail Ibrahim Marhoon,
  • Fadwa Alshaeer,
  • Mohammed Al-Bahrani,
  • G. Abdulkareem-Alsultan,
  • Maadh Fawzi Nassar

摘要

We report significant improvements in the superconducting characteristics of yttrium barium copper oxide (YBa₂Cu₃O₇₋δ, YBCO) by incorporating barium zirconate (BaZrO₃, BZO) and multi-walled carbon nanotubes (MWCNTs) into an innovative core-shell nanofiber architecture. Fabricated via coaxial electrospinning, this approach enables precise control over the nanofiber composition and morphology. Integrating 3 wt% BZO into YBCO@CNT nanofibers (which include 3 wt% MWCNTs) enhances superconducting performance by increasing the activation energy (U₀), critical current density (Jc), and marginally raising the superconducting transition temperature (Tc). The enhancements arise from improved inter-grain interaction, less lattice strain, and better flux pinning, enabled by the MWCNT network and BZO nanoparticles.

Graphical Abstract