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Electromagnetic shields based on multilayer film structures

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Abstract

Electrodeposited multilayer-film electromagnetic shields are very promising for protecting various devices due to high shielding efficiency and the possibility of depositing on complex-shaped objects. In this communication, we present the results of measurements of the shielding efficiency of such shields. The shields represent alternating layers of materials with high magnetic permeability (Ni-Fe) and high conductivity (Cu). The maximum number of double layers is 45. It is shown that the shielding efficiency in the weak magnetic fields (0.1–0.2 mT) is 8–10; at higher magnetic field strengths (1.5–2.5 mT), it reaches 80–100. It is shown that the shielding factor increases with the number of layers in the shield at the same thickness of a soft magnetic material. A permalloy shield at the same amount of a soft magnetic material has an efficiency lower by a factor of 3–15 depending on the magnetic field strength.

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Authors and Affiliations

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

    V. V. Dmitrenko, Phyo Wai Nyunt, K. F. Vlasik, V. M. Grachev, S. S. Muravyev-Smirnov, A. S. Novikov, S. E. Ulin, Z. M. Uteshev, I. V. Chernysheva & A. E. Shustov

  2. Scientific-Practical Materials Research Center, National Academy of Sciences of Belarus, ul. Brovki 19, Minsk, 220072, Belarus

    S. S. Grabchikov

Authors
  1. V. V. Dmitrenko
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  2. Phyo Wai Nyunt
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  3. K. F. Vlasik
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  4. V. M. Grachev
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  5. S. S. Grabchikov
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  6. S. S. Muravyev-Smirnov
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  7. A. S. Novikov
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  8. S. E. Ulin
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  9. Z. M. Uteshev
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  10. I. V. Chernysheva
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  11. A. E. Shustov
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Corresponding author

Correspondence to V. V. Dmitrenko.

Additional information

Original Russian Text © V.V. Dmitrenko, Phyo Wai Nyunt, K.F. Vlasik, V.M. Grachev, S.S. Grabchikov, S.S. Muravyev-Smirnov, A.S. Novikov, S.E. Ulin, Z.M. Uteshev, I.V. Chernysheva, A.E. Shustov, 2015, published in Kratkie Soobshcheniya po Fizike, 2015, Vol. 42, No. 2, pp. 20–27.

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Dmitrenko, V.V., Nyunt, P.W., Vlasik, K.F. et al. Electromagnetic shields based on multilayer film structures. Bull. Lebedev Phys. Inst. 42, 43–47 (2015). https://doi.org/10.3103/S1068335615020037

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  • DOI: https://doi.org/10.3103/S1068335615020037

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