Susceptibility profile in soft magnetic wires

The local susceptibility profile is here proved to be a reliable source of unique information about the internal domain structure and the local magnetization process. In the present work, the profile is studied for a series of magnetically soft amorphous wires having different magnetostriction constants and exhibiting various domain structures. The presence of closure domain structures near the ends of the wires is confirmed. These domains appear regardless of the value of the magnetostriction constant. They reduce the stray field energy and strongly enhance the local values of susceptibility.