Evaluation of the Normal-zone Initiation and Propagation Characteristics of YBCO Tape

There are great expectations for YBCO tape as a “next-generation superconductor tape” because the Jc characteristic has better magnetic field dependence at high temperatures and/or in a high magnetic field. It is important to consider stability for superconducting applications; however, the stabilit...

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Published inTEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan) Vol. 39; no. 11; pp. 560 - 566
Main Authors ISHIYAMA, Atsushi, YANAI, Masahiro, UEDA, Hiroshi, IIJIMA, Yasuhiro, SAITOH, Takashi, SHIOHARA, Yuh
Format Journal Article
LanguageJapanese
English
Published Tokyo CRYOGENICS AND SUPERCONDUCTIVITY SOCIETY OF JAPAN 25.11.2004
Japan Science and Technology Agency
Subjects
Ag stabilizer thickness
MQE
normal-zone initiation and propagation
YBCO tape
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Summary:There are great expectations for YBCO tape as a “next-generation superconductor tape” because the Jc characteristic has better magnetic field dependence at high temperatures and/or in a high magnetic field. It is important to consider stability for superconducting applications; however, the stability criterion for YBCO has not yet been distinctly established. Thus, for the sake of establishing stability criterion for YBCO, we examined the normal-zone initiation and propagation characteristics of a YBCO tape sample experimentally and numerically, and the experimental results were compared with a simulation conducted utilizing a newly developed computer program based on the finite element method (FEM). We also investigated the influence of Ag stabilizer thickness and Hastelloy substrate on the transient thermal behavior of the YBCO tapes.
ISSN:0389-2441
1880-0408
DOI:10.2221/jcsj.39.560