Reliable 4.8 T trapped magnetic fields in Gd-Ba-Cu-O bulk superconductors using pulsed field magnetization

Difan Zhou; Jan Srpcic; Kaiyuan Huang; Mark Ainslie; Yunhua Shi; Anthony Dennis; Martin Boll; Mykhaylo Filipenko; David Cardwell; John Durrell

doi:10.1088/1361-6668/abd45a

Reliable 4.8 T trapped magnetic fields in Gd-Ba-Cu-O bulk superconductors using pulsed field magnetization

Difan Zhou^*, Jan Srpcic, Kaiyuan Huang, Mark Ainslie, Yunhua Shi, Anthony Dennis, Martin Boll, Mykhaylo Filipenko, David Cardwell, John Durrell

^*Corresponding author for this work

Engineering

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

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, B T, 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 (B a) necessary to trap 4.8 T was merely 5.29 T, corresponding to a remarkable magnetization efficiency (B T/B a) of 90%.

Original language	English
Article number	034002
Journal	Superconductor Science and Technology
Volume	34
Issue number	3
DOIs	https://doi.org/10.1088/1361-6668/abd45a
Publication status	Published - 29 Jan 2021

Keywords

bulk superconductors
flux jump
pulsed field magnetization

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10.1088/1361-6668/abd45a

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title = "Reliable 4.8 T trapped magnetic fields in Gd-Ba-Cu-O bulk superconductors using pulsed field magnetization",

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, B T, 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 (B a) necessary to trap 4.8 T was merely 5.29 T, corresponding to a remarkable magnetization efficiency (B T/B a) of 90%.",

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T1 - Reliable 4.8 T trapped magnetic fields in Gd-Ba-Cu-O bulk superconductors using pulsed field magnetization

AU - Zhou, Difan

AU - Srpcic, Jan

AU - Huang, Kaiyuan

AU - Ainslie, Mark

AU - Shi, Yunhua

AU - Dennis, Anthony

AU - Boll, Martin

AU - Filipenko, Mykhaylo

AU - Cardwell, David

AU - Durrell, John

N1 - Funding Information: This study was supported in part by Grant NS 18170 from the National Institute of Neurological and Communicative Disorders and Stroke. Publisher Copyright: © 2021 IOP Publishing Ltd.

PY - 2021/1/29

Y1 - 2021/1/29

N2 - 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, B T, 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 (B a) necessary to trap 4.8 T was merely 5.29 T, corresponding to a remarkable magnetization efficiency (B T/B a) of 90%.

AB - 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, B T, 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 (B a) necessary to trap 4.8 T was merely 5.29 T, corresponding to a remarkable magnetization efficiency (B T/B a) of 90%.

KW - bulk superconductors

KW - flux jump

KW - pulsed field magnetization

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SN - 0953-2048

VL - 34

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

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M1 - 034002

ER -

Reliable 4.8 T trapped magnetic fields in Gd-Ba-Cu-O bulk superconductors using pulsed field magnetization

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Keywords

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