This paper describes how microwave-assisted magnetic recording can be used to reduce adjacent track erasure and increase areal density in dual-thickness and dual-layer bit-patterned media. By tuning the high-frequency magnetic field, selective switching of dots in different layers or dots with different thicknesses can be achieved. Offsetting arrays of dots in different layers makes it easier to detect the signal from each layer, and areal densities of 5 Tb/in2, or more, may be possible.
- Bit-patterned media (BPM)
- microwave-assisted magnetic recording (MAMR)