Possibility of Reduction in Hysteresis Loss Due to
Reversible Fluxoid Motion in a
Superconducting Bi-2223 Multifilamentary Wire
Title, author, abstract
- title
- Possibility of Reduction in Hysteresis Loss Due to
Reversible Fluxoid Motion in a
Superconducting Bi-2223 Multifilamentary Wire
- authors
- Edmund Soji Otabe, Hiroshi Matsuoka, Teruo Matsushita
Department of Computer Science and Electronics,
Kyushu
Institute of Technology, 680--4 Kawazu, Iizuka 820, Japan
Jun Fujikami, Kazuya Ohmatsu
Basic High Technology Laboratories,
Sumitomo
Electric Industries, Ltd., 1--1--3 Shimaya, Konohana-ku,
Osaka 554, Japan
- abstract
- The energy loss density was measured and the AC
penetration depth, $\lambda_0'$, was estimated from the
slope of a minor magnetization curve for a superconducting
Bi-2223 multifilamentary tape at various temperatures
under the application of a parallel AC magnetic field to the tape. It was
found that at high temperatures $\lambda_0'$ was
comparable to the filament thickness and the energy loss
density was lower than that predicted using a modified
Kim's model taking into account the effect of the
diamagnetism. This reduction is ascribed to the reversible
fluxoid motion inside pinning potential wells. The
reduction of the filament thickness to less than 2~$\mu$m is recommended
for the achievement of the low energy loss density at 77~K.
- Original paper appears in
- Jpn. J. Appl. Phys. Vol. 37, No. 4A, (1998) pp. L382-L385