Flux Pinning Analysis of Superconducting YBCO Foam Struts

Michael R. Koblischka, Anjela Koblischka-Veneva, Crosby Soon Chang, Thomas Hauet, E. Sudhakar Reddy, Georg J. Schmitz

研究成果: Article査読

6 被引用数 (Scopus)

抄録

Magnetization loops were measured on struts of superconducting YBa 2 Cu 3 O x (YBCO, 123-phase) foams taken from various positions of a 5 × 2 × 2 cm 3 large foam sample prepared at RWTH Aachen. From these data, flux pinning forces, F p = j c × B, were calculated and pinning force scaling diagrams F p /F p ,max versus h = H a /H irr were established. The scaling in the temperature range 60 K ≤ T ≤ 85 K was found to be well developed for all samples with peak positions, h 0 , above 0.4, which is an indication of δT c pinning. From microstructure analysis using the electron backscatter diffraction technique (EBSD), it is known that the struts are fully converted into the 123-phase with embedded 211 particles being relatively small. The variation of F p depending on the position of the struts in the original sample directly reveals the changes of the texture as found employing EBSD.

本文言語English
論文番号8528518
ジャーナルIEEE Transactions on Applied Superconductivity
29
3
DOI
出版ステータスPublished - 2019 4

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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