Abstract
Head-medium interactions (HMI) were estimated by using a finite-element numerical simulation to solve the Poisson equation for the two-dimensional model of a Mn-Zn ferrite ring-type head and a γ-Fe2O3 coating tape system. As a result, it was found that the HMI in the present system with a head-medium spacing of 0.005 μm is equivalent to a 50% increase in output voltage at each bit density. In addition, the output voltage of the conventional method using the reciprocity theorem was found to be about a half of that in the present method.
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