Nonlinear magnetization reversal in copper-permalloy composite wires induced by a high-frequency current

The phenomenon of magnetization reversal in copper-permalloy composite wire s induced by a high-frequency ac current field was studied. The frequency s pectrum of a voltage measured in the probing coil wound on the wire contain s only even harmonics in a broad range of amplitudes of the ac excitation c urrent and the bias magnetic field strength. The amplitude of the even harm onics measured is highly sensitive with respect to the bias field. The resu lts can be used to develop weak magnetic field sensors. (C) 2001 MAIK "Nauk a/Interperiodica".