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

M. Tsuda, T. Susa, T. Ohyama, Atsushi Ishiyama, S. Kohayashi, S. Haseyama

    Research output: Contribution to journalArticle

    8 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Pages (from-to)894-897
    Number of pages4
    JournalIEEE Transactions on Applied Superconductivity
    Volume10
    Issue number1
    DOIs
    Publication statusPublished - 2000

    Fingerprint

    Magnetic fields
    electromagnetism
    Fluxes
    magnetic fields
    Magnetic flux
    magnetic flux
    Creep
    Temperature
    Magnetic levitation
    levitation
    rotors
    Magnets
    alternating current
    magnets
    flux density
    Rotors
    radii
    probes
    decay
    Experiments

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Physics and Astronomy (miscellaneous)

    Cite this

    Electromagnetic behavior on high-temperature superconducting bulk YBCO exposed to time-varying magnetic field. / Tsuda, M.; Susa, T.; Ohyama, T.; Ishiyama, Atsushi; Kohayashi, S.; Haseyama, S.

    In: IEEE Transactions on Applied Superconductivity, Vol. 10, No. 1, 2000, p. 894-897.

    Research output: Contribution to journalArticle

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    AU - Kohayashi, S.

    AU - Haseyama, S.

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