Thermally-assisted magnetic recording head and method of manufacturing the same
AssigneeTDK Corporation
InventorKoji SHIMAZAWA
Life of this patent
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Abstract
This thermally-assisted magnetic recording head includes: a waveguide; a magnetic pole; and a plasmon generator having a first region and a second region, in which the first region has an one end exposed on an air-bearing surface and another end located on an opposite side of the air-bearing surface, and in which the second region is coupled to the another end of the first region and has a volume greater than a volume of the first region. The first region includes a high-density region having a density that is greater than the density of the second region.
Claims19
A thermally-assisted magnetic recording head, comprising:
- a waveguide;
- a magnetic pole;
- and
- a plasmon generator having a first region and a second region, the first region having an one end exposed on an air-bearing surface and another end located on an opposite side of the air-bearing surface, the second region being coupled to the another end of the first region and having a volume greater than a volume of the first region, and the first region including a high-density region having a density that is greater than the density of the second region.
A method of manufacturing a thermally-assisted magnetic recording head, the method comprising:
- forming a plasmon generator including a first region and a second region, the second region being coupled to the first region and having a volume greater than a volume of the first region;
- heating the plasmon generator under a vacuum atmosphere or under an inert gas atmosphere, thereby applying a stress to the first region derived from thermal expansion of the second region under a high temperature;
- and
- forming, following the heating, an air-bearing surface through polishing a part, located on an opposite side of the second region, of the first region.
Dependencies are inferred from the claim text.