Perpendicular magnetic discrete track recording disk
View Patent ↗A method of forming a discrete track recording pattern on a soft magnetic underlayer of a perpendicular magnetic recording disk. In one embodiment, the soft magnetic underlayer is continuous throughout the discrete track recording pattern.
1. A method of fabricating a magnetic recording disk, comprising:
disposing a radially continuous soft magnetic underlayer above a disk substrate;
physically texturing the radially continuous soft magnetic underlayer; and
forming a discrete track recording pattern on the radially continuous soft magnetic underlayer after the disposing of the radially continuous soft magnetic underlayer, wherein the discrete track pattern comprises a plurality of tracks and wherein the soft magnetic underlayer is retained continuously throughout the plurality of tracks.
2. The method of claim 1 , further comprising disposing a NiP layer over the radially continuous soft magnetic underlayer.
3. The method of claim 2 , further comprising texturing the NiP layer.
4. The method of claim 1 , further comprising disposing a layer of NiP between the substrate and the radially continuous soft magnetic underlayer.
5. The method of claim 1 , further comprising polishing the radially continuous soft magnetic underlayer before texturing.
6. The method of claim 1 , wherein texturing the radially continuous soft magnetic underlayer is performed before forming the discrete track recording pattern.
7. The method of claim 1 , wherein texturing the radially continuous soft magnetic underlayer is performed after forming the discrete track recording pattern.
8. A method of fabricating a magnetic recording disk, comprising:
disposing a radially continuous soft magnetic underlayer above a disk substrate;
polishing the continuous soft magnetic underlayer; and
forming a discrete track recording pattern on the soft magnetic underlayer, wherein the discrete track pattern comprises a plurality of tracks and wherein the soft magnetic underlayer is retained continuously throughout the plurality of tracks.
9. The method of claim 8 , wherein polishing the radially continuous soft magnetic underlayer is performed before forming the discrete track recording pattern.
10. The method of claim 8 , wherein polishing the radially continuous soft magnetic underlayer is performed after forming the discrete track recording pattern.