### Title, author, abstract

title
Flux Pinning Property in Y-123 Single Crystal
authors
Hideyo Yamato(1), Masaru Kiuchi(1), Teruo Matsushita(1,2)
Alexandre. I. Rykov(3), Setsuko Tajima(3), Naoki Koshizuka(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)Superconductivity Research Laboratory, International Superconductivity Technology Center,
1--10--3 Shinonome, Koto-ku, Tokyo 135, Japan
abstract
The longitudinal and transverse flux bundle sizes are estimated for a three-dimensional single crystal Y-123 superconductor under a magnetic field along the $c$-axis and the result is compared with previous results of Bi-2212 and Bi-2223. It is considered that the longitudinal flux bundle size is determined only by the flux pinning strength independently of the dimensionality of superconductor. The number of flux lines in the flux bundle, $g^{\rm 2}$, which is related to the transverse flux bundle size, is estimated to be larger than 8. This number is much larger than those in Bi-2212 and Bi-2223.
Original paper appears in
10th International Symposium on Superconductivity
October 28--30, 1997
Gifu, Japan