Domain model for the magnetoimpedance of metallic ferromagnetic wires

Complex inductance formalism (L) is used to calculate the complex circular permeability (mu(circ)) in a domain model for the magnetoimpedance (MI) of soft ferromagnetic wires. An excellent agreement between calculated and experimental values of mu(circ) as a function of frequency is observed. In addition, a very good agreement is also exhibited between experimental and calculated plots of mu(circ) as a function of an applied dc magnetic field before and above the relaxation frequency (also known as single- and double-peak MI effect). These results confirm the validity of L as an alternative approach to MI phenomena in soft ferromagnetic wires. (C) 2003 American Institute of Physics.