Distribution of Critical Current Density in a
Superconducting Bi-2223 Tape Wire
Title, author, abstract
- title
-
Distribution of Critical Current Density in a
Superconducting Bi-2223 Tape Wire
- authors
-
Masaru Kiuchi(1), Akihito Yamasaki(1), Teruo
Matsushita(1,2)
Jun Fujikami(3), Kazuya
Ohmatsu(3), Ken-ichi Sato(3)
(1)Department of Computer Science and Electronics, Kyushu
Institute of Technology,
680--4 Kawazu, Iizuka, 820 JAPAN
(2)Graduate School of
Information Science and Electrical Engineering (ISEE),
Kyushu University,
6--10--1 Hakozaki, Higashi-ku, Fukuoka 812--81, Japan
(3)Osaka Research
Laboratories, Sumitomo Electric
Industries, Ltd., 1--1--3 Shimaya,
Konohana-ku, Osaka 544, Japan
- abstract
-
The distribution of pinning strength is estimated from
measured current-voltage curves using the Weibull function
for a Bi-2223 silver-sheathed tape wire under a magnetic
field parallel to the $c$-axis. The obtained result is
compared with a simple distribution function assumed in the
analysis of the scaling of current-voltage curves using the
flux creep-flow model. It is found that the simple
distribution function describes well. The wide distribution
seems to be caused by percolating current paths due to weak
lines.
- Original paper appears in
-
10th International Symposium on Superconductivity
October 28--30, 1997
Gifu, Japan