Local extension of head overcoat with a near-field transducer extending toward the media-facing surface
US12159654B1 · kind B1 · utility
1Cited by
12References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2023 |
| Grant date | Dec 3, 2024 |
| Priority date | — |
| Expiry date | Jul 31, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A HAMR data storage device may include a magnetic media and a slider comprising: a main pole, a waveguide, and a near-field transducer (NFT) situated between the main pole and the waveguide, wherein an air-bearing surface (ABS) of the slider comprises a transparent overcoat layer situated over the main pole, the waveguide, and the NFT, and wherein the transparent overcoat layer has a particular thickness such that, during an operational phase of the HAMR data storage device, a gap between a media-facing surface of the transparent overcoat layer and the magnetic media is less than about 0.5 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.