Abstract
The recording characteristics of thin-layer metal particulate media were calculated by a two-dimensional finite element method, using the curling model for the magnetic recording layer. The effects of the maximum flux density and coercive force of the magnetic recording layer, and both in-plane and out-of-plane angular dispersion of magnetic particle orientation, on the reproduced output were calculated. This study reveals the importance of controlling the angular dispersion of the magnetic particle orientations. Although the reproduced voltage increases as the in-plane dispersion is reduced, reducing out-of-plane dispersion often decreases its reproduced voltage. This implies that in a longitudinal metal particulate media, a higher square ratio does not always give higher output. The paper also describes the effects of obliquely oriented metal particulate media on recording characteristics and overwrite efficiency.
