Method of building self-aligned optical side shield structure
US11011192B1 · kind B1 · utility
1Cited by
31References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2020 |
| Grant date | May 18, 2021 |
| Priority date | — |
| Expiry date | Feb 25, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optically shielded (thermally assisted magnetic recording (TAMR) head comprises a perpendicular magnetic recording (PMR) write head and a near-field transducer (NFT) having an emerging peg at the air-bearing surface (ABS). Self-aligned optical side shields (SA-OSS) are formed using a self-aligning process that positions the shields symmetrically relative to the emergent peg of the NFT. As a result of the symmetric positioning the down-track and cross-track near-field and near-field gradients are significantly sharpened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.