Headway Technologies Assigned Two Patents

Perpendicular magnetic recording writer with tunable two bias branches
Headway Technologies, Inc., Milpitas, CA, has been assigned a patent (12380917) developed by Liu; Yue, Fremont, CA, and Dovek; Moris Musa, San Jose, CA, for a “perpendicular magnetic recording writer with tunable two bias branches.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “The present embodiments relate to a perpendicular magnetic recording (PMR) write head with a Two Tunable bias branch design that can electrical separate a WS1/PP3 and a SS/LS to form two tunable bias branches. A write head can include a main pole, a write gap(WG) disposed adjacent to the main pole, and a hot seed (HS) layer connected to the WG. The PMR write head can also include a trailing shield, a side shield and a leading shield. Two tunable bias branches can be formed to electrically separate the trailing shield and the side and leading shields. A first branch can include a first electrical path between the main pole and the trailing shield. The tunable bias branches can also include a second branch forming a second electrical path between the main pole and the side and leading shields.”

The patent application was filed on 2023-03-03 (18/117135).

Hybrid plasmonic bottom layer for increased near field transducer reliability
Headway Technologies, Inc., Milpitas, CA, has been assigned a patent (12354628) developed by Xu; Weihao, Maletzky; Tobias, San Jose, CA, Tanemura; Shigeki, Sunnyvale, CA, Fujii; Ken, San Jose, CA, and Hu; Weisheng, Fremont, CA, for a “hybrid plasmonic bottom layer for increased near field transducer reliability.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “The present embodiments relate to a near field transducer for thermally-assisted magnetic recording (TAMR) with a hybrid plasmonic bottom layer. In a first example embodiment, a thermally-assisted magnetic recording (TAMR) write head is provided. The TAMR write head can include a main pole and a near field transducer (NFT). The NFT can include a first layer and a second layer. The first layer can include a first plasmonic material (e.g., rhodium, iridium, platinum). Further, the first layer can be disposed adjacent to the heat sink. The second layer can include a portion of a second plasmonic material (e.g., gold) and a first plasmonic portion (e.g., comprising rhodium). The first plasmonic portion of the second layer can be disposed adjacent to the ABS. The hybrid second layer (e.g., plasmonic bottom layer) can provide an improved NFT reliability during TAMR writing.”

The patent application was filed on 2024-02-26 (18/587570).