PERPENDICULAR MAGNETIC RECORDING MEDIUM WITH MAGNETIC TORQUE LAYER COUPLED TO THE PERPENDICULAR RECORDING LAYER

摘要

PERPENDICULAR MAGNETIC RECORDING MEDIUM WITH MAGNETIC TORQUE LAYER COUPLED TO THE PERPENDICULAR RECORDING LAYERABSTRACT OF THE DISCLOSUREA perpendicular magnetic recording medium, such as a perpendicular magnetic recording disk, has a magnetic "torque" layer (MTL) that exerts a magnetic torque onto the perpendicular magnetic recording layer (RL) in the presence of the applied perpendicular write field. The MTL thus acts as a write assist layer in reversing the magnetization of the RL. A coupling layer (CL) is located between the MTL and the RL and provides the appropriate ferromagnetic coupling strength between the MTL and the RL.Figure 3