Magnetization Reversal in System of Two Co-rich Amorphous Microwires

The present work reports on the investigations of the magnetization reversal of the system of two glass covered amorphous microwires with circular magnetic bistability. The experiments have been carried out using the transverse magneto-optical Kerr effect in circular and axial magnetic field. The electric current flowing through two wires in opposite directions produced the circular magnetic field. The successive opposite jumps of circular magnetization appear as a result of mutual interaction of the microwires. A strong influence of the axial magnetic field on the circular bistability has been found. The analysis of the experimental results has been performed in the frame of the model taking into account the superposition of circular magnetic field, produced by the electric current and axial stray fields, produced by the inner cores of microwires. The proposed system could be considered as an active element for the sensor of magnetic field.