Research 2010
Development of FePt Perpendicular Magnetic Recording Media for Thermally-Assisted Magnetic Recording (TAMR)
Aug 2, 2010
- This research was conducted by Kazuhiro Hono
FePtAg-C nanogranular perpendicular magnetic thin films with a mean particle diameter of 6.1 nm and coercivity of 37kOe has been developed for thermally assisted magnetic recording (TAMR). Using a TAMR static tester, a recording density of 450 Gbit/in2 has been demonstrated. This recording density is the highest for the TAMR recording, and is comparable to the highest recording density in current hard disk drives.
Figure 1: (Left) Transmission electron microscopy of the nano-particle-dispersed perpendicular magnetic film and, (right) patterns of recording bits by the TAMR head.