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

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3 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number012026
JournalJournal of Physics: Conference Series
Volume234
Issue numberPART 1
DOIs
Publication statusPublished - 2010 Jan 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Miu, L., Ivan, I., Badica, P., Jakob, G., Miu, D., Mele, P., Matsumoto, K., Mukaida, M., Yoshida, Y., Horide, T., Ichinose, A., & Horii, S. (2010). Magnetization relaxation in YBCO films with improved supercurrent transport properties. Journal of Physics: Conference Series, 234(PART 1), [012026]. https://doi.org/10.1088/1742-6596/234/1/012026