Heat assisted magnetic recording (HAMR) write head containing a near-field transducer with diffusion barrier and method of making thereof
US11626137B1 · kind B1 · utility
1Cited by
17References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2022 |
| Grant date | Apr 11, 2023 |
| Priority date | — |
| Expiry date | Jan 31, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A heat assisted magnetic recording (HAMR) write head includes a main pole, a waveguide, at least one dielectric matrix layer, and a near-field transducer disposed between the waveguide and the main pole. The near-field transducer is embedded in at least one dielectric matrix layer. The near-field transducer includes an antenna and a thermal shunt. The thermal shunt includes a thermal shunt body portion in direct contact with the antenna, and a metallic shunt diffusion barrier laterally surrounding the thermal shunt body portion and disposed between the thermal shunt body portion and the at least one dielectric matrix layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.