Magnetization in minimum geometry M-R heads with multilayer films

A one dimensional model has been developed for the distribution of magnetization in M-R elements; the model considers elements made from double layer films and those driven by a current through the elements. The model demonstrates that both demagnetizing and exchange effects must be taken into account as the elements are reduced to micron widths. The model also provides a convenient means for calculating average demagnetizing effects and magneto-resistive response.