Magnetization relaxation in YBCO films with improved supercurrent transport properties

L. Miu, I. Ivan, P. Badica, G. Jakob, D. Miu, P. Mele, K. Matsumoto, M. Mukaida, Y. Yoshida, T. Horide, A. Ichinose, S. Horii

    研究成果: Contribution to journalArticle査読

    3 被引用数 (Scopus)

    抄録

    The relaxation of the irreversible magnetization in optimally doped YBCO films with natural and artificial pinning centres was measured in zero-field cooling conditions using SQUID magnetometry. The external magnetic field H was oriented along the c axis. An appropriate method for the determination of the characteristic vortex pinning energy from the normalized vortex-creep activation energy is discussed. This is based on the existence of a crossover elastic (collective) vortex creep at low temperatures T - plastic vortex creep at high T, caused by the T dependent macroscopic currents induced in the sample during magnetization measurements.

    本文言語英語
    論文番号012026
    ジャーナルJournal of Physics: Conference Series
    234
    PART 1
    DOI
    出版ステータス出版済み - 2010

    All Science Journal Classification (ASJC) codes

    • 物理学および天文学(全般)

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