[Zurück]

M. Zehetmayer, R. Fuger, M. Eisterer, F. Hengstberger, H. W. Weber:
"Assessment of the local supercurrent densities in long superconducting coated conductors";
Applied Physics Letters, 90 (2007), S. 032506-1 - 032506-3.

The authors report on measurements of the local supercurrent density in long Y1Ba2Cu3O7− based
coated conductors by the magnetoscan technique. Significant inhomogeneities were found, which
are well resolved by the resulting magnetic field map. A single central line scan along the length of
the conductor reflects the inhomogeneities over the entire width of the sample, thus offering the
possibility of very fast characterization. Modifying the applied field leads to different results
highlighting either the overall critical current or details of the defect structure. In addition, numerical
simulations of the current dynamics were carried out for a qualitative and quantitative interpretation
of the results.