To solve scientific and practical problems in the field of electromagnetic measurements, a detailed magnetic characteristic of inhomogeneous media used in various devices is required. The characteristic was obtained from the magnetization of the basic element of the medium — a chain of granules, spheres. To measure magnetic fluxes in a chain along its cores of different radii, it is proposed to use circular sensors-contours on printed circuit boards. The placement of circular sensors between the contacting spheres of the magnetized chain made it possible to determine the magnetic properties of not only the cores of the chain, but also its quasi-continuous tube-layers bounded by adjacent sensors. According to the values of the magnetic flux experimentally measured by sensor-circuits in eight cores of the chain with relative radii of 0.2–0.9 at a magnetizing field strength in the range of 10–55 kA/m, we established the values of the magnetic flux in seven tube-layers with relative radii of 0.25–0.85. The values of the magnetic susceptibility of the tube-layers were determined, which decrease according to an inverse power dependence with an exponent of 2.4 with increasing relative radius. In relatively short chains with the number of spheres 2–8, the values of the demagnetizing factor of tube-layers are established and functionally approximated. The results obtained can be used to study the conditions for the formation of zones responsible for the magnetic capture of magnetically active particles between the granules of the working elements (matrix type) of polygradient magnetic separators and analyzers.
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Translated from Izmeritel’naya Tekhnika, No. 3, pp. 49–54, March, 2023.
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Sandulyak, A.A., Sandulyak, D.A., Gorpinenko, Y.O. et al. Magnetic Properties of Tube-Layers of Magnetized Chains of Spheres: Monitoring by Measured Magnetic Core Parameters. Meas Tech 66, 191–196 (2023). https://doi.org/10.1007/s11018-023-02209-6
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DOI: https://doi.org/10.1007/s11018-023-02209-6