A1 Refereed original research article in a scientific journal
Control of the nanosized defect network in superconducting thin films by target grain size
Authors: Aye Moe Moe, Rivasto Elmeri, Khan Mukarram Zaman, Rijckaert Hannes, Salojärvi Esko, Haalisto Christopher, Mäkilä Ermei, Palonen Heikki, Huhtinen Hannu, Van Driessche Isabel, Paturi Petriina
Publisher: NATURE RESEARCH
Publication year: 2021
Journal: Scientific Reports
Journal name in source: SCIENTIFIC REPORTS
Journal acronym: SCI REP-UK
Article number: ARTN 6010
Volume: 11
Issue: 1
Number of pages: 11
ISSN: 2045-2322
DOI: https://doi.org/10.1038/s41598-021-85304-4
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/53700917
A nanograined YBCO target, where a great number of grain boundaries, pores etc. exist, is shown to hold an alternative approach to future pulsed laser deposition based high-temperature superconductor thin film and coated conductor technologies. Although the nanograined material is introduced earlier, in this work, we comprehensively demonstrate the modified ablation process, together with unconventional nucleation and growth mechanisms that produces dramatically enhanced flux pinning properties. The results can be generalized to other complex magnetic oxides, where an increased number of defects are needed for modifying their magnetic and electrical properties, thus improving their usability in the future technological challenges.
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