High-Performance Bi-2212 Round Wires Made With Recent Powders

Jiang, Jianyi; Bradford, Griffin; Hossain, S. Imam; Brown, Michael D.; Cooper, Jonathan; Miller, Evan; Huang, Yibing; Miao, Hanping; Parrell, Jeff A.; White, Marvis; Hunt, Andrew; Sengupta, Suvankar; Revur, Rao; Shen, Tengming; Kametani, Fumitake; Trociewitz, Ulf P.; Hellstrom, Eric E.; Larbalestier, David C.

doi:10.1109/TASC.2019.2895197

High-Performance Bi-2212 Round Wires Made With Recent Powders

Journal Article · Wed Jan 23 23:00:00 EST 2019 · IEEE Transactions on Applied Superconductivity

DOI:https://doi.org/10.1109/TASC.2019.2895197· OSTI ID:1825522

^[1]; Bradford, Griffin ^[2]; ^[2]; ^[2]; Cooper, Jonathan ^[2]; Miller, Evan ^[2]; Huang, Yibing ^[3]; Miao, Hanping ^[3]; Parrell, Jeff A. ^[3]; White, Marvis ^[4]; Hunt, Andrew ^[4]; Sengupta, Suvankar ^[5]; ^[5]; ^[6]; Kametani, Fumitake ^[2]; Trociewitz, Ulf P. ^[2]; ^[2]; ^[2]

Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab. (MagLab); Florida State University
Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab. (MagLab)
Bruker OST, Carteret, NJ (United States)
nGimat LLC, Lexington, KY (United States)
MetaMateria, Columbus, OH (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Multifilamentary Bi₂Sr₂CaCu₂O_x (Bi-2212) wire made by the powder-in-tube technique is the only high-temperature superconductor made in the round shape preferred by magnet builders. The critical current density (J_C) of Bi-2212 round wire was improved significantly by the development of overpressure heat treatment in the past few years. Bi-2212 wire is commercially available in multiple architectures and kilometer-long pieces and is a very promising conductor for very high-field NMR and accelerator magnets. Here, we studied the effects of precursor powder and heat treatment conditions on the superconducting properties and microstructure of recent Bi-2212 wires. Short samples of recent wire with optimized overpressure processing showed J_C (4.2 K, 15 T) = 6640 A/mm² and J_C (4.2 K, 30 T) = 4670 A/mm², which correspond to engineering critical current densities J_E (4.2 K, 15 T) = 1320 A/mm² and J_E (4.2 K, 30 T) = 930 A/mm².

View Accepted Manuscript (DOE)

Research Organization:: Florida State Univ., Tallahassee, FL (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF); National Institutes of Health (NIH)

Grant/Contract Number:: SC0010421

OSTI ID:: 1825522

Alternate ID(s):: OSTI ID: 1975398

Journal Information:: IEEE Transactions on Applied Superconductivity, Journal Name: IEEE Transactions on Applied Superconductivity Journal Issue: 5 Vol. 29; ISSN 1051-8223

Publisher:: IEEECopyright Statement

Country of Publication:: United States

Language:: English

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Cited By (2)

Process to densify Bi ₂ Sr ₂ CaCu ₂ O _X round wire with overpressure before coil winding and final overpressure heat treatment Matras, M. R.; Jiang, J.; Trociewitz, U. P. Superconductor Science and Technology, Vol. 33, Issue 2 https://doi.org/10.1088/1361-6668/ab5ad6	journal	January 2020
Dipole Magnets Above 20 Tesla: Research Needs for a Path via High-Temperature Superconducting REBCO Conductors Wang, Xiaorong; Gourlay, Stephen A.; Prestemon, Soren O. Instruments, Vol. 3, Issue 4 https://doi.org/10.3390/instruments3040062	journal	November 2019

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