Electromagnetic behavior on high-temperature superconducting bulk YBCO exposed to time-varying magnetic field

M. Tsuda*, T. Susa, T. Ohyama, A. Ishiyama, S. Kohayashi, S. Haseyama

*この研究の対応する著者

研究成果査読

8 被引用数 (Scopus)

抄録

We present results of comprehensive study of electromagnetic behavior of high-temperature superconducting bulk YBCO exposed to time-varying magnetic field. The characteristic of trapped magnetic flux is one of the key factors in application of high-temperature superconducting bulk, such as magnetic levitation system, rotor of motor and bulk magnet. Especially, time inconstancy of trapped flux, such as flux creep, is undesirable for its application system. The relationship between time-varying external magnetic field and trapped flux is investigated experimentally using field-cooled (FC) YBCO disk. Magnetic flux density just above the disk is measured by Hall probes lined up along the disk radius. The magnetic field decay which may be independent of flux creep is observed in the experiment and is influenced significantly by frequency and amplitude of AC external magnetic field. The effect of changing rate of applied magnetic field in field-cool process on trapped flux is also investigated experimentally.

本文言語English
ページ(範囲)894-897
ページ数4
ジャーナルIEEE Transactions on Applied Superconductivity
10
1
DOI
出版ステータスPublished - 2000
イベントThe 16th International Conference on Magnet Tehnolopgy - Tallahassee, FL, USA
継続期間: 1999 9 261999 10 2

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 電子工学および電気工学

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