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: Article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English
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Published - 2010
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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