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On the possible separation of the phase enriched with Nb in superconducting intermetallic Nb3Sn irradiated with fast protons

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Abstract

The results of the study of magnetization and dynamic magnetic susceptibility are correlated with changes in the microstructure of superconducting intermetallic Nb3Sn plates irradiated at the Kurchatov Institute cyclotron with fast protons with an energy of 12.8 MeV to a fluence of 1 · 1018 cm−2. The dependence of the superconducting transition temperature on the total irradiation dose is determined. For one of the samples, the dynamic magnetic susceptibility exhibits several steps corresponding to superconducting transitions at different temperatures. It is assumed that a Nb-enriched phase is separated in the region of maximum radiation damages. A microstructural analysis shows the appearance of randomly oriented Nb-enriched regions from 0.1 to 0.5 μm in size.

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Authors and Affiliations

  1. Russian Scientific Center “Kurchatov Institute”, pl. Kurchatova 1, Moscow, 123182, Russia

    A. L. Vasil’ev, P. N. Degtyarenko, I. A. Karateev, V. S. Kruglov, S. T. Latushkin, A. V. Lunev, A. I. Ryazanov, E. V. Semenov, V. N. Unezhev & S. V. Shavkin

  2. Lebedev Physical Institute, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 119991, Russia

    S. Yu. Gavrilkin

  3. National Research Nuclear University “MEPhI”, Kashirskoe sh. 31, Moscow, 115409, Russia

    V. S. Kruglov & A. I. Ryazanov

  4. Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya ul. 13, Bd. 2, Moscow, 125412, Russia

    P. N. Degtyarenko

  5. CERN, TE-MSC, CH-1211, Geneva 23, Switzerland

    A. Ballarino, L. Bottura & R. Flükiger

  6. Laboratory of Crystallography, University of Geneva, CH-1211, Geneva 4, Switzerland

    R. Flükiger

Authors
  1. A. L. Vasil’ev
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  2. A. Ballarino
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  3. L. Bottura
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  4. S. Yu. Gavrilkin
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  5. P. N. Degtyarenko
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  6. I. A. Karateev
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  7. V. S. Kruglov
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  8. S. T. Latushkin
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  9. A. V. Lunev
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  10. A. I. Ryazanov
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  11. E. V. Semenov
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  12. V. N. Unezhev
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  13. R. Flükiger
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  14. S. V. Shavkin
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Corresponding author

Correspondence to P. N. Degtyarenko.

Additional information

Original Russian Text © A.L. Vasil’ev, A. Ballarino, L. Bottura, S.Yu. Gavrilkin, P.N. Degtyarenko, I.A. Karateev, V.S. Kruglov, S.T. Latushkin, A.V. Lunev, A.I. Ryazanov, E.V. Semenov, V.N. Unezhev, R. Flükiger, S.V. Shavkin, 2017, published in Kratkie Soobshcheniya po Fizike, 2017, Vol. 44, No. 4, pp. 47–53.

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Vasil’ev, A.L., Ballarino, A., Bottura, L. et al. On the possible separation of the phase enriched with Nb in superconducting intermetallic Nb3Sn irradiated with fast protons. Bull. Lebedev Phys. Inst. 44, 118–121 (2017). https://doi.org/10.3103/S1068335617040078

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  • DOI: https://doi.org/10.3103/S1068335617040078

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