The write field of a magnetic-film recording head

Magnitude and distribution of the write field generated in the gap region of a miniaturized single-turn recording head are computed on the basis of a micromagnetic analysis. The head consists of a copper strip conductor coated with a high-permeability film containing a gap. Computations predict that magnetic-film heads can produce fields adequate for writing on conventional recording media with currents of a few hundred milliamperes. Also, the results indicate that the write resolution of such heads may be expected to be better than that of heads now in use.