This article is cited in 1 paper

Magnetic and screening properties of amorphous ferromagnetic ribbons

S. A. Gudoshnikov^ab, Yu. B. Grebenshchikov^c, V.T. Volkov^d, Yu. V. Prokhorova<sup>b

a</sup> National University of Science and Technology «MISIS», Moscow
^b Pushkov Institute of Terrestrial Magnetism, Ionosphere, and Radio Wave Propagation, Russian Academy of Sciences, Troitsk, Moskovskaya obl.
^c Financial University under the Government of the Russian Federation, Moscow
^d Lomonosov Moscow State University

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 10$^{-6}$. 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 $\times$ 10$^7$) 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.

Received: 13.02.2014

 English version: Technical Physics Letters, 2014, 40:10, 849–852

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