Energy assisted discrete track media with heat sink
AssigneeWestern Digital Technologies, Inc.
InventorsEric J. Champion, Adam F. Torabi, Matthew R. Gibbons
Life of this patent
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Abstract
A discrete track perpendicular magnetic recording (PMR) disk and a method of fabricating the disk are described. The PMR disk may include a heat sink layer disposed above a substrate, intermediate layers disposed above the heat sink layer, and a magnetic recording layer disposed above the intermediate layers. The magnetic recording layer may have raised and recessed areas, where a heat conductive material may be disposed within one or more of the recessed areas.
Claims14
A perpendicular magnetic recording (PMR) disk, comprising:
- a substrate;
- a heat sink layer being different than the substrate and disposed above the substrate;
- a plurality of intermediate layers disposed above the heat sink layer;
- a magnetic recording layer disposed above the plurality of intermediate layers, the magnetic recording layer having a plurality of raised areas and recessed areas formed therein;
- a heat sink material disposed within one or more of the plurality of recessed areas;
- and
- an amorphous layer disposed between the substrate and the heat sink layer, wherein the substrate comprises glass, the heat sink layer comprises copper and the amorphous layer comprises tantalum.
A perpendicular magnetic recording (PMR) disk, comprising:
- a substrate;
- a heat sink layer being different than the substrate and disposed above the substrate;
- a plurality of intermediate layers disposed above the heat sink layer;
- a magnetic recording layer disposed above the plurality of intermediate layers, the magnetic recording layer having a plurality of raised areas and recessed areas formed therein;
- and
- a heat sink material disposed within one or more of the plurality of recessed areas, wherein each raised area is surrounded by a first adjacent recessed area and a second adjacent recessed area being on opposite sides of a raised area, and wherein at least one of the first and second adjacent recessed areas has the heat sink material disposed therein, and wherein the other one of the first and second adjacent recessed areas comprises an air gap.
Dependencies are inferred from the claim text.