Giant magnetoimpedance in composite wires with insulator layer between non-magnetic core and soft magnetic shell
arXiv:cond-mat/0511386 · doi:10.1016/j.jmmm.2005.10.149
Abstract
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.
10 pages, 3 figures