Stress buffer for near-field transducer in energy assisted magnetic recording and methods for fabricating the same
US8619512B1 · kind B1 · utility
157Cited by
11References
31Claims
0Family size
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Key dates
| Filing date | Jun 22, 2012 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Jun 22, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An energy assisted magnetic recording (EAMR) head having a stress buffer for reducing the stress on a near-field transducer during thermal expansion and methods for fabricating the EAMR head are provided. The EAMR head includes a waveguide, a near-field transducer (NFT) configured to receive optical energy from the waveguide, and a cladding of the waveguide has an opening. The NFT is positioned within the opening, and an air gap is formed between the NFT and a side wall of the opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.