Theory of anhysteretic contact duplication

A theoretical treatment is given of the anhysteretic contact duplication process for magnetic recording tapes. The treatment, which is completely analytical, is restricted to the linear approximation. Reversible permeabilities of both master and slave (which may be anisotropic) are taken into account. Both the longitudinal and the perpendicular components of the slave magnetization are taken into consideration, and it is shown that the presence of the latter significantly affects the results. The theoretical results are compared with experimental data, obtained from a large-scale simulation.