Reliable 4.8 T trapped magnetic fields in Gd-Ba-Cu-O bulk superconductors using pulsed field magnetization
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Authors
Huang, Danny
Boll, Martin
Filipenko, Mykhaylo
Cardwell, David A
Journal Title
Superconductor Science and Technology
ISSN
0953-2048
Publisher
IOP Publishing
Type
Article
This Version
AM
Metadata
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Zhou, D., Srpčič, J., Huang, D., Ainslie, M., Shi, Y., Dennis, T., Boll, M., et al. (2020). Reliable 4.8 T trapped magnetic fields in Gd-Ba-Cu-O bulk superconductors using pulsed field magnetization. Superconductor Science and Technology https://doi.org/10.1088/1361-6668/abd45a
Abstract
A robust and reliable in-situ magnetization method is essential for exploiting the outstanding magnetic flux trapping ability of bulk superconductors in practical applications. We report a 4.8 T peak trapped magnetic field, BT, achieved at 30 K in a 36 mm diameter GdBa2Cu3O7-δ-Ag bulk superconductor using pulsed field magnetization (PFM). To realize this, we have developed a reliable two-step multi-pulse PFM process based on understanding and exploiting the avalanche-like flux jump phenomenon observed in these materials. The magnitude of the applied pulsed magnetic field (Ba) necessary to trap 4.8 T was merely 5.29 T, corresponding to a remarkable magnetization efficiency (BT/Ba) of 90%.
Sponsorship
This study was supported by the Engineering and Physical Sciences Research Council (No. EP/P00962X/1), the Strategic Priority Research Program of the Chinese Academy of Sciences (No. XDB25000000), the National Key R&D Program (2016YFF0101701) and the project (6140923050202). M D Ainslie would like to acknowledge financial support from an Engineering and Physical Sciences Research Council (EPSRC) Early Career Fellowship, EP/P020313/1
Funder references
EPSRC (EP/P020313/1)
EPSRC (EP/P00962X/1)
Embargo Lift Date
2021-12-16
Identifiers
External DOI: https://doi.org/10.1088/1361-6668/abd45a
This record's URL: https://www.repository.cam.ac.uk/handle/1810/315114
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