RECORDING MEDIUM PROPERTIES AND CAPACITY BOUNDS

The effect of such medium properties as magnetic unit size, film thick ness, and strength of anisotropy, dipolar, and exchange interactions o n the storage capacity limit of a thin-film recording medium is invest igated. Relationships are derived for media with different properties that have equivalent capacity. The physically realizable range of mate rial properties and their effect on the capacity bound are explored. R esults on edge effects for capacity bound computations are presented. The results indicate that media for which anisotropy is the dominant s ource of magnetic energy have the greatest potential for information s torage.