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Título: | Optimizing vortex pinning in YBa2Cu3O7-x superconducting films up to high magnetic fields |
Autor: | Vallés, Ferran CSIC ORCID; Palau, Anna CSIC ORCID; Abraimov, Dmytro; Jaroszynski, Jan; Constantinescu, Anca Monia; Mundet, Bernat CSIC ORCID; Obradors, Xavier CSIC ORCID; Larbalestier, David; Puig Molina, Teresa CSIC ORCID | Palabras clave: | Coated conductors Columnar defects Crystals |
Fecha de publicación: | 8-jul-2022 | Editor: | Nature Publishing Group | Citación: | Communications Materials 3(1): 45 (2022) | Resumen: | The magnetic flux pinning capabilities of YBa2Cu3O7-x (YBCO) coated conductors vary strongly across different regions of the magnetic field–temperature phase diagram and with the orientation of the magnetic field θ. Here, we determine the optimal pinning landscape for a given region of the phase diagram by investigating the critical current density Jc(H,θ,T) in the 5–77 K temperature range, from self-field to high magnetic fields of 35 T. Our systematic analysis reveals promising routes for artificially engineering YBCO coated conductors in any region of interest of the phase diagram. In solution-derived nanocomposites, we identify the relevance of coexisting high amounts of short stacking faults, Cu-O vacancy clusters, and segmentation of twin boundaries, in combination with nanoparticles, for enhanced pinning performance at high magnetic fields and low temperatures. Moreover, we demonstrate that twin boundaries preserve a high pinning energy in thick YBCO films, which is beneficial for the pinning performance at high magnetic fields and high temperatures. | Versión del editor: | http://dx.doi.org/10.1038/s43246-022-00266-y | URI: | http://hdl.handle.net/10261/283161 | DOI: | 10.1038/s43246-022-00266-y | E-ISSN: | 2662-4443 |
Aparece en las colecciones: | (ICMAB) Artículos |
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