We propose a modified setup of the conventional induction method to investigate the coupling between ferromagnetic bistable wires. The idea is to prevent the saturation by an application of two additional coils near the wire ends in a conventional measurement of the hysteresis loop of the wires. In this way, the fluctuations of the switching field are eliminated. Theoretically, the system is described by phenomenological equations of motion, one equation per wire. The hysteresis loop calculated numerically agrees qualitatively with the experimental results. The comparison allows to evaluate the value of the magnetostatic coupling between the wires.

No abstract

Domain walls in two interacting ferromagnetic wires are trapped in between the wire ends by means of additional coils. The hysteresis loop of the system reveals an interaction of moving domain walls in the presence of an external oscillating magnetic field. This hysteresis is investigated by means of phenomenological equations of motion of the domain walls. By fitting to experimental data, we obtain the magnetic charge distribution in the domain wall. The result is that the domain wall contains two parts, a planar one and a conical one. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)