Headway Technologies, Incorporated

Sae Magnetics (Hong Kong) Limited

Sae Technologies Development (Dongguan) Co., Ltd

Koji Shimazawa

Hong Guo

Weihao Xu

Dayu Zhou

Tsutomu Chou

Yukinori Ikegawa

Tobias Maletzky

Shengyuan Wang

Pengbo Yang

Xuhui Jin

Qinghui Guo

Vincent Man Fat Chiah

The present embodiments relate to a noble metal coating on a parabolic waveguide blocker surface to future improve thermal gradient for HAMR head which can provide an improved thermal spot confinement over other designs. More particularly, the present embodiments relate to a component in the near field transducer (NFT), made of a metallic parabolic shaped waveguide blocker (PWB) with noble metal coating on the PWB surface. The designs as described herein can include a noble metal coating (e.g., Au, Rh, Ir, Pt, Aluminum (Al), etc.) which can enable a plasmonic effect on the PWB surface for HAMR thermal gradient improvement.

Noble metal coated plasmonic waveguide blocker for heat assisted magnetic recording head

The present embodiments relate to a near-field transducer (NFT) for a hard disk drive write head with a parabolic waveguide blocker. The waveguide blocker can include a parabolic curved surface in a center portion of a first side of the waveguide blocker and a first side comprising a slope angle of between 10-90 degrees. The waveguide blocker can be configured to reduce electromagnetic radiation from the waveguide core and recycle a scattering field emitting from the NFT to mitigate a thermal background in a recording medium and improve a thermal gradient to increase an area density capacity (ADC) of the hard disk drive write head.

Parabolic shaped plasmonic waveguide blocker for heat assisted recording head

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.

Iridium film with a thin iridium template layer for a heat-assisted magnetic recording (HAMR) writer

A near field transducer (NFT) having improved reliability is disclosed. In some embodiments, a NFT includes a resonator body layer having a front side at a first plane that is recessed a first distance from an air bearing surface (ABS), and a peg layer that is a single layer made of a noble metal or alloy thereof. The peg layer includes a peg portion or peg with a front side at the ABS, a back side at the first plane, and two sides aligned orthogonal to the ABS and separated by the first cross-track width. The peg portion or the peg having a single peg grain with or without a desired () orientation through laser self-annealing process.

Self-aligned hybrid near field transducer with single peg grain

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Cupertino, CA, United States of America

Koji Shimazawa