NDLI: The J $_{c}$ Limit of Multifilamentary Ag/Bi-2223 Tapes

Content Provider	Springer Nature Link
Author	Chen, W. M. Jiang, S. S. Chen, W.
Copyright Year	2003
Abstract	To improve on present critical current (J $_{c}$) performance, multifilamentary Ag/Bi-2223 tapes with a large range of reduction rates were manufactured. The relative core mass density D was calculated, dependent on the measured geometric dimensions of the tapes. Experimental results, D vs. J $_{c}$, D vs. maximum pinning force density F $_{ max }$, and D vs. irreversible magnetic field B $_{irr}$, are quantitatively formatted. In particular, the magnetic field dependence of J $_{c}$ is critically dependent on its core density. If the core density increases by 10%, J $_{c}$ of the tapes in this experiment is enhanced by as much as 100%. Therefore, in the present state of the technological process for manufacturing Ag/Bi-2223 tape, increasing the core density is clearly a significant strategy in improving the electronic and magnetic properties of the tapes and enhancing the capacity for carrying current at high magnetic fields. The limit of the bulk self-field-J $_{c}$ can be calculated by the relationships of J $_{c}$ vs. D. The limit is estimated to be on the order of 200 kA/cm$^{2}$ for multifilamentary Bi-2223 tapes, which was supported by magneto-optical (MO) magnetization measurements results. It is a hard task to approach this limit with the present state of the art in manufacturing Ag/Bi-2223 tape, and it is the time to suggest some new ideals for Bi-2223 tapes to promote large-scale applications.
Starting Page	987
Ending Page	992
Page Count	6
File Format	PDF
ISSN	08961107
Journal	Journal of Superconductivity and Novel Magnetism
Volume Number	16
Issue Number	6
e-ISSN	15729605
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2003-01-01
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Characterization and Evaluation Materials Condensed Matter Solid State Physics and Spectroscopy
Content Type	Text
Resource Type	Article
Subject	3100/3101 Condensed Matter Physics Electronic, Optical and Magnetic Materials

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