CURRENT-VOLTAGE CHARACTERISTICS
IN SUPERCONDUCTING Bi-2212 TAPES
Title, author, abstract
- title
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CURRENT-VOLTAGE CHARACTERISTICS
IN SUPERCONDUCTING Bi-2212 TAPES
- authors
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M. Kiuchi, K. Noguchi, M. Tagomori,
T. Matsushita
Department of Computer Science and Electronics, Kyushu
Institute of Technology,
680--4 Kawazu, Iizuka, 820 JAPAN
T. Hasegawa
Showa Electric Wire \& Cable Co. Ltd.,
Kawasaki, Kanagawa 210, Japan
- abstract
-
The current-voltage curves are
measured for a dip-coated Bi-2212 tape wire at various
temperatures under the magnetic field parallel to the
$c$-axis. It is found that the current-voltage curves are
approximately scaled on two master curves by normalizing
as predicted in the vortex glass-liquid transition theory.
However, the obtained dynamic critical index was about 3
and too small in spite of two-dimensional flux line
systems. These results are compered with the theorical
analysis based on the flux creep-flow model taking account
for the distribution of pinning strength. It is found that
the theorical result approximately explains the
experimental result on the scaling behavior, the critical
indices and the transition line.
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8th International Workshop on Critical Current
May 27-29, 1996
Kitakyushu, Japan