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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | van der Meer, O. Xueyu Cai Jianyi Jiang Parella, R.D. Huang, Y.B. Larbalestier, D.C. Haken, Bt. ten Kate, H.H.J. |
| Copyright Year | 2002 |
| Abstract | Previous studies suggest that there is a significant variation in both shape and physical properties from filament to filament in a multifilament superconducting Bi-2223/Ag tape. We are investigating this variation for a tape with a high critical current density (J/sub c/). For this study, we extracted all the filaments from a specially prepared high-quality tape having J/sub c/ (0 T, 77 K) = 45 kA/cm/sup 2/ with 19 disconnected filaments. By attaching current leads and voltage taps to the filaments, we are able to measure electrical properties on a scale of 200-300 /spl mu/m. The experiments show a large variation in filament properties. The conductivity of a filament at room temperature is proportional to its critical current density J/sub c/ at 77 K (self-field) and filaments with a higher transition temperature T/sub c/ do also show a higher J/sub c/. There is also a variation in the magnetic field behavior of the filaments. SEM pictures of the filaments also show large variations. The filaments from the center of the tape, which are thinner and have a larger aspect ratio (and thus a larger silver-filament interface), show better grain alignment and fewer impurities than filaments from the edges. |
| Sponsorship | Council on Superconductivity Appl. Superconductivity Conference Inc MIT |
| Starting Page | 2926 |
| Ending Page | 2929 |
| Page Count | 4 |
| File Size | 534483 |
| File Format | |
| ISSN | 10518223 |
| Volume Number | 13 |
| Issue Number | 2 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2003-06-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Superconducting transition temperature Critical current density Shape Multifilamentary superconductors Superconducting filaments and wires Superconducting films Joining processes Voltage Current measurement Electric variables measurement |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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