Giant magnetoimpedance in composite wires with insulator layer between non-magnetic core and soft magnetic shell
Buznikov, N. A. · Antonov, A. S. · Granovsky, A. B. · Kim, C. G. · Kim, C. O. · Li, X. P. · Yoon, S. S.
Original · EN
A method for calculation of the magnetoimpedance in composite wires having an insulator layer between non-magnetic core and soft magnetic shell is described. It is assumed that the magnetic shell has a helical anisotropy and the driving current flows through the core only. The distribution of eddy currents and expressions for the impedance are found by means of a solution of Maxwell equations taking into account the magnetization dynamics within the shell governed by the Landau-Lifshitz equation. The effect of the insulator layer on the magnetoimpedance is analyzed.
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