Investigation of High Density Magnetic Recording with Single-layer Perpendicular Media

This paper describes the recent research results on magnetic recording with single-layer perpendicular recording media. This includes the thermal stability of recorded information, the linear recording density resolution, the recorded track edge profile, the media noise, the nonlinear transition shifts, the signal decay due to demagnetizing field, etc. The combination of Co-alloy single-layer perpendicular media with high perpendicular magnetic anisotropies (Mr/Ms>0.95) and ring-head writing has a high potential to increase the attainable areal density beyond 10 Gb/in2 while avoiding or reducing the difficulties which are feared to face with the conventional longitudinal magnetic recording.

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