Features of amplification of dipole magnetic field with linear ferromagnetic concentrator

Abstract

Amplification of a low frequency magnetic field from a dipole source by means of linear ferromagnetic concentrator of different dimensions ͑permalloy micro wire͒ has been investigated experimentally. The results obtained strengthen the validity of the analytical relation for amplification which allows for nonlinear dependence of the magnetic permeability upon the value and distribution of the dipole field over concentrator length.