### 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