低温工学
Online ISSN : 1880-0408
Print ISSN : 0389-2441
ISSN-L : 0389-2441
研究論文
IBAD/CVD-YBCOテープ線材のピンニング特性の超電導層厚依存性
高橋 祐治姫木 携造木内 勝松下 照男式町 浩二渡部 智則鹿島 直二長屋 重夫
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2009 年 44 巻 12 号 p. 565-572

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The dependence of the transport and magnetization critical current density (Jc) characteristics on the superconducting layer thickness (d) was investigated for IBAD/CVD-processed, YBCO-coated conductors. It is believed that the decrease in Jc with increasing d in the low magnetic-field region is caused by degradation of the superconducting layer structure. The irreversibility field (Bi) increased in the low electric-field region as the thickness increased, whereas it decreased in the usual electric-field region. The apparent pinning potential (U0*) estimated using magnetic relaxation measurement also showed a complicated dependence on thickness. The results observed were approximately explained by the prediction of the flux creep-flow model.

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© 2009 公益社団法人 低温工学・超電導学会 (旧 社団法人 低温工学協会)
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