Cutting strip domains by use of electric currents

A study of the current requirement to cut a bubble from a strip domain in uniaxial magnetic materials was carried out experimentally and theoretically. The strip domains were cut by use of a current flowing through a fine gold wire. Various functions were used to simulate the shape of the walls just before cutting. It is found that good agreement with the measured values of a cutting field is obtained when the wall shape consists of sections of ellipses.