E-antenna near field transducer with thermal shunt to return pole
US9042209B2 · kind B2 · utility
9Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2013 |
| Grant date | May 26, 2015 |
| Priority date | — |
| Expiry date | Jul 30, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a heat-assisted magnetic recording head for use in a hard disk drive, a thermal shunt is positioned between an E-antenna near field transducer (NFT) and a return pole, to draw excess heat away from the NFT region. The thermal shunt comprises two portions separated by a gap that has a trapezoidal cross-section, where the NFT-side of the gap is wider than the return pole-side of the gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.