Magnetization losses in multifilament coated superconductors

Magnetization losses in multifilament coated superconductors

We report the results of a study of the magnetization losses in experimental multifilament, as well as control (uniform) coated superconductors exposed to time-varying magnetic fields of various frequencies. Both the hysteresis loss, proportional to the sweep rate of the applied magnetic field, and...

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Veröffentlicht in:Applied physics letters 2005-02, Vol.86 (7), p.072509-072509-3
Hauptverfasser: Levin, G. A., Barnes, P. N., Amemiya, N., Kasai, S., Yoda, K., Jiang, Z.
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container_issue 7
container_start_page 072509
container_title Applied physics letters
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creator Levin, G. A.
Barnes, P. N.
Amemiya, N.
Kasai, S.
Yoda, K.
Jiang, Z.
description We report the results of a study of the magnetization losses in experimental multifilament, as well as control (uniform) coated superconductors exposed to time-varying magnetic fields of various frequencies. Both the hysteresis loss, proportional to the sweep rate of the applied magnetic field, and the coupling loss, proportional to the square of the sweep rate, have been observed. A scaling is found that allows us to quantify each of these contributions and extrapolate the results of the experiment beyond the envelope of accessible field amplitude and frequency. The combined loss in the multifilament conductor is reduced by about 90% in comparison with the uniform conductor at full field penetration at a sweep rate as high as 3 T/s.
doi_str_mv 10.1063/1.1861955
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title Magnetization losses in multifilament coated superconductors
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