Reliable 4.8 T trapped magnetic fields in Gd-Ba-Cu-O bulk superconductors using pulsed field magnetization
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Authors
Zhou, Difan
Srpcic, Jan
Shi, Yunhua
Boll, Martin
Filipenko, Mykhaylo
Publication Date
2021-03Journal Title
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
ISSN
0953-2048
Publisher
IOP Publishing
Volume
34
Issue
3
Number
ARTN 034002
Type
Article
This Version
AM
Metadata
Show full item recordCitation
Zhou, D., Srpcic, J., Huang, D., Ainslie, M., Shi, Y., Dennis, T., Boll, M., et al. (2021). Reliable 4.8 T trapped magnetic fields in Gd-Ba-Cu-O bulk superconductors using pulsed field magnetization. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 34 (3. ARTN 034002)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%.
Keywords
bulk superconductors, pulsed field magnetization, flux jump
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
Rights
All rights reserved