The effect of filament diameter on je in high filament count bi2212/ag round wire

William T. Nachtrab; Terence Wong; Xiaotao T. Liu; Justin Schwartz

doi:10.1109/TASC.2009.2018213

The effect of filament diameter on j_e in high filament count bi2212/ag round wire

William T. Nachtrab, Terence Wong, Xiaotao T. Liu, Justin Schwartz

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Abstract

In this study, we investigated the effect of filament size on J_e for high filament count Bi2212 round wire conductors partial melt processed with T_max between 882 and 890° C in pure oxygen. The filament size that produced maximum J_e was between 12 and 15 μm depending on conductor design and T_max. When the filament size was below 12 μm the filaments were unstable during partial melt processing leading to a break-up in the structure of the filament array and low J_e. This effect is attributed the formation of interconnects between filaments which leads to coarsening driven by a reduction in interfacial surface energy

Original language	English (US)
Article number	5153166
Pages (from-to)	3061-3066
Number of pages	6
Journal	IEEE Transactions on Applied Superconductivity
Volume	19
Issue number	3
DOIs	https://doi.org/10.1109/TASC.2009.2018213
State	Published - Jun 2009

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/TASC.2009.2018213

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title = "The effect of filament diameter on je in high filament count bi2212/ag round wire",

abstract = "In this study, we investigated the effect of filament size on Je for high filament count Bi2212 round wire conductors partial melt processed with Tmax between 882 and 890° C in pure oxygen. The filament size that produced maximum Je was between 12 and 15 μm depending on conductor design and Tmax. When the filament size was below 12 μm the filaments were unstable during partial melt processing leading to a break-up in the structure of the filament array and low Je. This effect is attributed the formation of interconnects between filaments which leads to coarsening driven by a reduction in interfacial surface energy",

author = "Nachtrab, {William T.} and Terence Wong and Liu, {Xiaotao T.} and Justin Schwartz",

note = "Funding Information: Manuscript received August 21, 2008. First published June 30, 2009; current version published July 15, 2009. This work was supported in part by the NIH-National Cancer Institute under Grant 4R44CA110117-03. W. T. Nachtrab and T. Wong are with Supercon, Inc., Shrewsbury, MA 01545 USA (e-mail: wnachtrab@supercon-wire.com). X. T. Liu and J. Schwartz are with the National High Magnetic Field Laboratory, Tallahassee, FL 32310 USA and the College of Engineering, Florida A&M University Florida State University , FL 32310USA (e-mail: schwartz@magnet. fsu.edu). Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TASC.2009.2018213",

year = "2009",

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doi = "10.1109/TASC.2009.2018213",

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AU - Nachtrab, William T.

AU - Wong, Terence

AU - Liu, Xiaotao T.

AU - Schwartz, Justin

N1 - Funding Information: Manuscript received August 21, 2008. First published June 30, 2009; current version published July 15, 2009. This work was supported in part by the NIH-National Cancer Institute under Grant 4R44CA110117-03. W. T. Nachtrab and T. Wong are with Supercon, Inc., Shrewsbury, MA 01545 USA (e-mail: wnachtrab@supercon-wire.com). X. T. Liu and J. Schwartz are with the National High Magnetic Field Laboratory, Tallahassee, FL 32310 USA and the College of Engineering, Florida A&M University Florida State University , FL 32310USA (e-mail: schwartz@magnet. fsu.edu). Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TASC.2009.2018213

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N2 - In this study, we investigated the effect of filament size on Je for high filament count Bi2212 round wire conductors partial melt processed with Tmax between 882 and 890° C in pure oxygen. The filament size that produced maximum Je was between 12 and 15 μm depending on conductor design and Tmax. When the filament size was below 12 μm the filaments were unstable during partial melt processing leading to a break-up in the structure of the filament array and low Je. This effect is attributed the formation of interconnects between filaments which leads to coarsening driven by a reduction in interfacial surface energy

AB - In this study, we investigated the effect of filament size on Je for high filament count Bi2212 round wire conductors partial melt processed with Tmax between 882 and 890° C in pure oxygen. The filament size that produced maximum Je was between 12 and 15 μm depending on conductor design and Tmax. When the filament size was below 12 μm the filaments were unstable during partial melt processing leading to a break-up in the structure of the filament array and low Je. This effect is attributed the formation of interconnects between filaments which leads to coarsening driven by a reduction in interfacial surface energy

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The effect of filament diameter on j_e in high filament count bi2212/ag round wire

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