ABSTRACT
A magnetic recording process involves relative motion between a magnetic medium (tape or disk) against a stationary or rotating read/write magnetic head (Mee and Daniel, 1996). For ever-increasing, high areal recording density, the linear flux density (number of flux reversals per unit distance) and the track density (number of tracks per unit distance) should be as high as possible. The areal densities of commercial tape and rigid disk drives shipped in the year 2000 were up to 1/2 Gbits/in.
