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.
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Valstyn et al. (1969) studied this question.
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