Preparation and Characterization of Dedicated Servo Media

The dedicated servo media (DSM) is the conventional perpendicular magnetic recording (PMR) media with an inserted servo recording layer between the data recording layer and the soft underlayer. By using the conventional PMR media as the reference, the design consideration on the layer structure, the preparation, the magnetic properties, the microstructure, including the c-axis orientation and the growth of the layers, the surface roughness, and the recording performance for the DSM are reported.