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Magnetic and screening properties of amorphous ferromagnetic ribbons

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Abstract

We have studied the magnetic and screening properties of cylindrical shields made of amorphous ferromagnetic ribbons. It is established that the relative magnetic permeability of this material can exceed 106. The action of an alternating decaying magnetic field (demagnetization) converts amorphous ferromagnetic ribbons into the state of anhysteretic magnetization, which is characterized by extremely high (above 2 × 107) values of the relative magnetic permeability in magnetic fields at a level of 10 nT. The results of measurements were used to estimate the coefficient of attenuation of the Earth’s magnetic field inside cylindrical shields with open ends, depending on the diameter and the number of layers of an amorphous ferromagnetic ribbon.

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Authors and Affiliations

  1. MISiS National Research Technological University, Moscow, 119991, Russia

    S. A. Gudoshnikov

  2. Pushkov Institute of Terrestrial Magnetism, the Ionosphere, and Radio Wave Propagation, Russian Academy of Sciences, Troitsk, Moscow, 142190, Russia

    S. A. Gudoshnikov & Yu. V. Prokhorova

  3. Financial University under the Government of the Russian Federation, Moscow, 125993, Russia

    Yu. B. Grebenshchikov

  4. Moscow State University, Moscow, 119991, Russia

    V. T. Volkov

Authors
  1. S. A. Gudoshnikov
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  2. Yu. B. Grebenshchikov
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  3. V. T. Volkov
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  4. Yu. V. Prokhorova
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Correspondence to S. A. Gudoshnikov.

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Original Russian Text © S.A. Gudoshnikov, Yu.B. Grebenshchikov, V.T. Volkov, Yu.V. Prokhorova, 2014, published in Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 2014, Vol. 40, No. 19, pp. 42–50.

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Gudoshnikov, S.A., Grebenshchikov, Y.B., Volkov, V.T. et al. Magnetic and screening properties of amorphous ferromagnetic ribbons. Tech. Phys. Lett. 40, 849–852 (2014). https://doi.org/10.1134/S1063785014100071

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  • DOI: https://doi.org/10.1134/S1063785014100071

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