A Lucarelli et al 2006 Supercond. Sci. Technol. 19 667 doi:10.1088/0953-2048/19/6/041
A Lucarelli1, G Lüpke1, T J Haugan2, G A Levin2 and P N Barnes2
Show affiliationsWe present a time-resolved magneto-optical (MO) imaging study of high-temperature superconductor (HTS) in a high-frequency alternating current (AC) regime. The evolution of the magnetic flux density distribution in YBa2Cu3O7−δ (YBCO) thin film samples is studied as a function of the phase of the applied AC current. A quantitative analysis of the data shows that the maxima of the AC current density is shifted from the edges further inside the sample, which may be caused by the higher self-induced field in that region. This technique can be used to study magnetic flux evolution in HTS films and coated conductors in the high-frequency current regime.
74.25.Fy Transport properties (electric and thermal conductivity, thermoelectric effects, etc.)
Issue 6 (June 2006)
Received 13 February 2006, in final form 28 March 2006
Published 9 May 2006
A Lucarelli et al 2006 Supercond. Sci. Technol. 19 667
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