Dynamic magnetic charges of domain walls and their influence on microwire magnetoimpedance

Abstract Domain walls in Co-based amorphous microwires with high-frequency current are investigated by the magnetoimpedance measurements. Dynamic stray fields of magnetic charges on domain walls were found out. In frame of the Landau–Lifshits approach the influence of the magnetic charges interactions on the microwire magnetoimpedance is studied. Parameter describing lowering of the magnetoimpedance is obtained.