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Pulsed Magnetization of a Short-Circuited HTSC Coil

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Abstract

We have studied trapped magnetic fields and their relaxation during pulsed magnetization of a 20-turn short-circuited coil made of a stabilized HTSC-2G tape at liquid nitrogen temperature. The highest trapped field is close to the value obtained during field cooling (FC process) and varies insignificantly upon a five-fold increase of the magnetizing pulse amplitude. Copper coating of the tape considerably suppresses pulsed heating effects. Current relaxation at the initial segment is determined by the current passing between superconducting and normal layers and by the form of the current–voltage characteristic. Over long time intervals (t > 100 s), relaxation is determined by the contact resistance of the soldered junction.

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ACKNOWLEDGMENTS

The authors are grateful to A.A. Shikov for measurements of tape resistance.

Funding

This study was supported by the Ministry of Education and Science of the Russian Federation under agreement no. 14.604.21.0197 (unique identifier for applied research RFMEFI60417X0197).

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Authors and Affiliations

  1. National Research Center Kurchatov Institute, 123182, Moscow, Russia

    P. A. Brazhnik, A. A. Kartamyshev, V. S. Korotkov & E. P. Krasnoperov

  2. Moscow Institute of Physics and Technology, 141700, Dolgoprudnyi, Moscow oblast, Russia

    E. P. Krasnoperov

  3. Moscow Technological University, 119454, Moscow, Russia

    A. A. Bishaev & M. V. Kozintseva

Authors
  1. P. A. Brazhnik
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  2. A. A. Kartamyshev
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  3. V. S. Korotkov
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  4. E. P. Krasnoperov
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  5. A. A. Bishaev
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  6. M. V. Kozintseva
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Corresponding author

Correspondence to E. P. Krasnoperov.

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The authors declare that they have no conflict of interest.

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Translated by N. Wadhwa

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Brazhnik, P.A., Kartamyshev, A.A., Korotkov, V.S. et al. Pulsed Magnetization of a Short-Circuited HTSC Coil. Tech. Phys. 64, 1140–1144 (2019). https://doi.org/10.1134/S1063784219080036

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  • DOI: https://doi.org/10.1134/S1063784219080036

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