High-Field and Angular Dependence Study of the Critical Current Surface in Modern REBCO Coated Conductors

Article Article scientifique Article High-Field and Angular Dependence Study of the Critical Current Surface in Modern REBCO Coated Conductors eng 2026-05 author Babouche Romain 0000-0002-9079-7281 Department of Quantum Matter Physics, University of Geneva, Geneva, Switzerland 418505 Département de physique de la matière quantique (FIMAC) author Zurmuehle Damien Department of Quantum Matter Physics, University of Geneva, Geneva, Switzerland 135559 Département de physique de la matière quantique (FIMAC) author Okada T. 0000-0002-6513-3758 Institute for Materials Research, Tohoku University, Sendai, Japan author Tsuchiya Y. Institute for Materials Research, Tohoku University, Sendai, Japan author Awaji S. 0000-0003-2043-1628 Institute for Materials Research, Tohoku University, Sendai, Japan author Senatore Carmine 0000-0002-9191-5016 Department of Quantum Matter Physics, University of Geneva, Geneva, Switzerland 561307 Département de physique de la matière quantique (FIMAC) 1-6 6600206 10.1109/tasc.2025.3617455 1051-8223 https://ieeexplore.ieee.org/document/11192666/ <p>In the frame of a collaboration between the University of Geneva and Tohoku University, the dependence of the critical current (Ic) on magnetic field orientation (θ), intensity (B) and temperature (T) was characterized on three commercial REBCO tapes from Faraday Factory/SuperOx, SuperPower and Shanghai Superconductor Technology, at temperatures between 4.2 K and 77 K and in magnetic fields up to 19 T in Geneva and 24 T at Tohoku University. Measurements were performed on full-width tapes at University of Geneva, and on patterned microbridges at Tohoku University. Among the three examined tapes, significant variations in the anisotropic landscape of Ic(B,T,θ) were observed (e.g., a single or dominant peak or a secondary peak rising with temperature), reflecting variations in processing methods and pinning centers. Additionally, results emphasize the necessity of full angular scans, as the angular position of the minimum Ic is observed to depend on T and B and can occur at angles as low as 35°, challenging the typical assumption of the minimum located at 90°, when B is aligned to the c-axis of REBCO. To address such variability, preliminary fits at various T and B are calculated using the maximum entropy model, offering a promising pathway toward efficient scaling relations.</p> <p></p> Dewey 500.2 Global Institute for Materials Research Tohoku (GIMRT) Program 202312-HMKGE-0502 33 Département de physique de la matière quantique 131 34 Département de physique nucléaire et corpusculaire 132 false 679 Groupe Senatore https://doi.org/10.1109/TASC.2025.3617455 IEEE transactions on applied superconductivity 36 3 4af05c54-1a1d-4bc0-876a-84f8fdac4299 Article (Published version) Restricted High-Field_and_Angular_Dependence_S.pdf 1832676 application/pdf 91302c071c0a6435deaa7c6b513735fd043e97d469fbacf075ce8599e097b1be restrictedAccess Faculté des sciences / Section de physique / Département de physique de la matière quantique Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire

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High-Field and Angular Dependence Study of the Critical Current Surface in Modern REBCO Coated Conductors	IEEE transactions on applied superconductivity			2026	1	0

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Babouche, Romain