Strong pinning at high growth rates in rare earth barium cuprate (REBCO) superconductor films grown with liquid-assisted processing (LAP) during pulsed laser deposition
Authors
Lai, MH
Kursumovic, A
Zhang, D
Lee, JH
Moon, S
Publication Date
2021Journal Title
Superconductor Science and Technology
ISSN
0953-2048
Publisher
IOP Publishing
Volume
34
Issue
4
Language
en
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
Feighan, J., Lai, M., Kursumovic, A., Zhang, D., Wang, H., Lee, J., Moon, S., & et al. (2021). Strong pinning at high growth rates in rare earth barium cuprate (REBCO) superconductor films grown with liquid-assisted processing (LAP) during pulsed laser deposition. Superconductor Science and Technology, 34 (4) https://doi.org/10.1088/1361-6668/abe18d
Description
Funder: SuNAM Co. Ltd.
Abstract
<jats:title>Abstract</jats:title>
<jats:p>We present a simple liquid-assisted processing (LAP) method, to be used <jats:italic>in situ</jats:italic> during pulsed laser deposition growth to give both rapid growth rates (50 Hz deposition leading to >250 nm min<jats:sup>−1</jats:sup> with a single plume) and strong pinning (improved ×5–10 at 30 K and below, over plain standard YBCO films grown at similar rates). Achieving these two important features <jats:italic>simultaneously</jats:italic> has been a serious bottleneck to date and yet for applications, it is critical to overcome it. The new LAP method uses a non-stoichiometric target composition, giving rise to a small volume fraction of liquid phase during film growth. LAP enhances the kinetics of the film growth so that good crystalline perfection can be achieved at up to 60× faster growth rates than normal, while also enabling artificial pinning centres to be self-assembled into fine nanocolumns. In addition, LAP allows for RE mixing (80% of Y with 20% of Yb, Sm, or Yb + Sm), creating effective point-like disorder pinning centres within the rare earth barium cuprate lattice. Overall, LAP is a simple method for use in pulsed laser deposition, and it can also be adopted by other <jats:italic>in situ</jats:italic> physical or vapour deposition methods (i.e. MOCVD, evaporation, etc) to significantly enhance both growth rate and performance.</jats:p>
Keywords
Paper, pinning, liquid-assisted, REBCO
Sponsorship
Grant from SuNAM Co. Ltd. Henry Royce Institute Equipment Grant: EP/P024947/1
Funder references
EPSRC (1790902)
Engineering and Physical Sciences Research Council (EP/N509620/1)
Engineering and Physical Sciences Research Council (EP/P024947/1)
Engineering and Physical Sciences Research Council (EP/P007767/1)
Engineering and Physical Sciences Research Council (EP/S019367/1)
Engineering and Physical Sciences Research Council (EP/R00661X/1)
Identifiers
sustabe18d, abe18d, sust-104261.r1
External DOI: https://doi.org/10.1088/1361-6668/abe18d
This record's URL: https://www.repository.cam.ac.uk/handle/1810/333738
Rights
Licence:
http://creativecommons.org/licenses/by/4.0
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