TY - JOUR
T1 - Flux Pinning Analysis of Superconducting YBCO Foam Struts
AU - Koblischka, Michael R.
AU - Koblischka-Veneva, Anjela
AU - Chang, Crosby Soon
AU - Hauet, Thomas
AU - Reddy, E. Sudhakar
AU - Schmitz, Georg J.
N1 - Funding Information:
Manuscript received January 20, 2018; revised October 4, 2018; accepted October 19, 2018. Date of publication November 9, 2018; date of current version March 20, 2019. This work was supported by ANR-DFG Project Ko2323/10. This paper was recommended by Associate Editor D. A. Cardwell. (Corresponding author: Michael R. Koblischka.) M. R. Koblischka and A. Koblischka-Veneva are with Saarland University, Saarbrücken 66041, Germany, and also with the Department of Materials Science and Engineering, Shibaura Institute of Technology, Tokyo 135-8548, Japan (e-mail:,m.koblischka@gmail.com). C. S. Chang and T. Hauet are with the Institut Jean Lamour, Université de Lorraine (UMR CNRS), Vandoevre-lès-Nancy 54506, France. E. Sudhakar Reddy is with Raychem RPG Pvt. Ltd., Bangalore 560042, India. G. J. Schmitz is with ACCESS, Aachen 52072, Germany. Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TASC.2018.2880334
PY - 2019/4
Y1 - 2019/4
N2 - 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.
AB - 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.
KW - Flux pinning
KW - YBa2Cu3Ox (YBCO)
KW - foam
KW - irreversibility fields
KW - magnetization
KW - scaling
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U2 - 10.1109/TASC.2018.2880334
DO - 10.1109/TASC.2018.2880334
M3 - Article
AN - SCOPUS:85056339535
VL - 29
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
SN - 1051-8223
IS - 3
M1 - 8528518
ER -