Hard Disk Media
The drive to push areal density to terabits/sq-inch and beyond means that hard disk drive companies are investing heavily in bringing on new media to achieve this goal. Today, Perpendicular Media Recording (PMR) is the norm. Coming down the tracks are Heat Assisted Magnetic Recording (HAMR), Bit Patterned Magnetic Recording (BPMR), Shingled media extending PMR, Microwave Assisted Magnetic Recording (MAMR) and Advanced Perpendicular Recording. Magnetic Annealing of patterned media structures is being developed both to assist in defining the physical patterned structure and optimising the materials properties of the recording medium.
