Abstract
The magnetization reversal behavior for spots in high density digital recording is presented in this paper. Two specific cases are examined: (1) narrow track width or large number of tracks per unit width and (2) narrow bit width or large number of bits per unit length. It has been found that the hysteresis loops for the two cases are quite different in appearance. Existence of either positive or negative average dipolar interaction field between ferromagnetic particles in the recording medium is shown. Finally, the effects of variations in tape parameters such as size, shape and spacing of particles in the medium are discussed.
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