An Amendment to “A Theoretical Solution for the Magnetic Field in the Vicinity of a Recording Head Air Gap” [Letter to the Editor]

摘要

W. Z. Zagwirński* points out in a private communication to the Editor that in Fig. 5 of “A Theoretical Solution for the Magnetic Field in the Vicinity of a Recording Head Air Gap”1 the curve pertaining to the rectangular head case (α = 1/2) is numerically in error. This curve, which was quoted from a paper by Booth2, depicts the variation of the field intensity E along the axis of symmetry (v axis) for the rectangular head case. Zagwiński indicates that the curve for this case, where (α = 1/2, and curves for (α = 11/18, 2/3, 3/4, and 1 should be as shown in the accompanying Fig. 1. The curve for α = 1/2 never crosses the curves corresponding to other values of α. Obviously, corrections are also required Fig. 6 of the authors'' paper. The new curves of Fig.2 incorporate these corrections