Iridium film with a thin iridium template layer for a heat-assisted magnetic recording (HAMR) writer
AssigneeHeadway Technologies, Inc.
InventorsKoji Shimazawa, Shengyuan Wang, Yukinori Ikegawa
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Abstract
The present embodiments relate to a heat-assisted magnetic recording (HAMR) write head with an iridium (Ir) film. The Ir film can include a body layer and a plasmon generator (PG) film comprising Iridium with a thin Ir seed layer. The Ir seed layer can be in direct contact with a dielectric (aluminum oxide). The thickness of the Ir film can be 40 nanometers or less including both a body layer and the seed layer. Incorporating Iridium as a material used for a PG can be a high surface plasmon efficient material with also being reliable under high temperature irradiation during a heat-assisted writing process.
Claims19
A heat-assisted magnetic recording (HAMR) write head comprising:
- a body layer comprising Iridium;
- a seed layer disposed adjacent to the body layer, the seed layer comprising Iridium;
- a main pole comprising a magnetic material;
- a plasmon generator (PG) portion comprising an Iridium (Ir) film;
- and
- a first dielectric spacer layer disposed between the main pole and the PG portion.
A method for manufacturing a write head, the method comprising:
- disposing a seed layer over a bottom planar generator (BSH) layer and a first dielectric spacer, the seed layer comprising iridium (Ir);
- disposing a body layer over the seed layer, the body layer comprising Ir;
- disposing a second dielectric spacer over the body layer;
- disposing a heat sink over the body layer;
- disposing a non-magnetic spacer layer over the heat sink and the second dielectric spacer;
- and
- disposing a main pole portion over the non-magnetic spacer layer.
A write head comprising:
- a main pole comprising a magnetic material;
- a body layer comprising Iridium (Ir);
- a seed layer disposed adjacent to the body layer, the seed layer comprising Iridium;
- a first dielectric spacer disposed adjacent to the seed layer;
- a second dielectric spacer disposed adjacent to the body layer;
- and
- a non-magnetic spacer disposed between the main pole and any of the second dielectric spacer and a heat sink.
Dependencies are inferred from the claim text.