Based on the signature of the pinning controlled domain wall movement for percolated media, a zero field energy barrier of 93 kBT is determined by fluctuation field measurements and is elucidated by micromagnetic calculations using the nudged elastic band method
This value is sufficiently large to qualify the material as promising percolated media It is proposed that further optimization
of the magnetic layer stack, including the use of a soft magnetic underlayer, of a hard scratch resistant overcoat and lubricant, might still increase the recording performance of this type of PPM.