Cross-talk simulation of a multi-track magnetic thin film head

The generation mechanisms of the crosstalk of a two-track thin-film magnetic head for an electronic still camera system are investigated by calculating the three-dimensional flow of the magnetic flux by means of the finite element method. Among various paths of the magnetic flux from the media magnetization, only three are found to be important with respect to the crosstalk. The first path is through the main track and determines the magnitude of the output voltage. The second and the third paths, responsible for the generation of the crosstalk, go into the neighboring track through the protective layer between the tracks and the lower core of the head, respectively. The crosstalk is found to be proportional to the difference between the magnetic flux of the latter two paths. This means that the crosstalk should vanish when the magnitudes of the magnetic flux of these two paths are equal, even if they are finite