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Study of the radial distribution of magnetic permeability over the cross-section of amorphous soft magnetic wire Co66Fe4Nb2.5Si12.5B15 using magnetoimpedance tomography
Russian version
Bukreev D.A. 1, Matsyuk I. M. 1, Derevyanko M.S. 1, Shapovalova A. V. 1, Moiseev A. A. 1, Semirov A. V. 1
1Irkutsk State University, Irkutsk, Russia
Email: da.bukreev@gmail.com, rezervimm@gmail.com, mr.derevyanko@gmail.com, ann-shapovalova@mail.ru, moiseev.al.an@gmail.com, semirov@mail.ru
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The results of a study on the radial distribution of magnetic permeability across the cross-section of an amorphous soft magnetic wire made of the Co66Fe4Nb2.5Si12.5B15 alloy in the magnetic field range from 0 to 12.3 kA/m are presented. The results were obtained using the magnetoimpedance tomography method, taking into account the external inductance of the wire. It was found that for the outer region of the wire with a thickness of 2.5 μm, in the absence of an external magnetic field, the magnetic permeability values do not exceed 100, while the magnetic permeability of the inner region reaches 13 500. The nature of the changes in the magnetic permeability of the outer and inner regions in an external magnetic field is also different. Keywords: magnetoimpedance tomography, amorphous wires, computer simulation, magnetoimpedance, magnetic permeability.
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