Novel magnetic relaxation in single-crystal Tl2Ca 1Ba2Cu2O8 superconductors

Fulin Zuo, M. B. Salamon, T. Datta, K. Ghiron

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Abstract

Magnetic relaxation in single-crystal Tl2Ca1Ba 2Cu2O8 superconductors is reported. Typical logarithmic flux creep has been observed at low temperatures. At high temperatures and fields, different flux dynamics are observed: first, nonlogarithmic dependence followed by the appearance of reverse creep, i.e., increasingly negative magnetization. This latter effect begins after a temperature- and field-dependent wait time. To explain reverse creep flux-line roughening, driven by pinning randomness, is considered.

Original languageEnglish (US)
Pages (from-to)5197-5199
Number of pages3
JournalJournal of Applied Physics
Volume69
Issue number8
DOIs
StatePublished - Dec 1 1991
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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