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Headway Technologies Assigned Patent

Iridium film with thin iridium template layer for HAMR writer

Headway Technologies, Inc., Milpitas, CA, has been assigned a patent (11996126) developed by Shimazawa; Koji, Cupertino, CA, Wang; Shengyuan, San Jose, CA, and Ikegawa; Yukinori, Cupertino, CA, for an Iridium film with a thin iridium template layer for a heat-assisted magnetic recording (HAMR) writer.

The abstract of the patent published by the U.S. Patent and Trademark Office states: “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.

The patent application was filed on 2022-09-30 (17/957304).