Perpendicular magnetic recording write head with plate having coil regions and heat-sink regions
US9070384B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2014 |
| Grant date | Jun 30, 2015 |
| Priority date | — |
| Expiry date | Nov 4, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3136
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording write head has a continuous electrically conductive plate with an aperture, a coil region around the aperture and heat-sink regions spaced from the coil region. A yoke stud is located in the aperture and connects the upper yoke layer to the main pole. The plate with the aperture replaces the multi-turn coil of the prior art and thus allows for a short yoke height. Write current is directed to the plate coil region and induces a magnetic field in the aperture, which generates magnetic flux in the yoke stud and the connected main pole. The heat-sink regions dissipate heat generated in the plate by the write current. A lower electrical lead layer is located below the plate and also has an aperture coincident with the aperture in the plate and a coil region around the aperture to assist in generating the magnetic field in the aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.