Magnetic recording head with assisting electric current in trailing shield
US12315538B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2024 |
| Grant date | May 27, 2025 |
| Priority date | — |
| Expiry date | Jan 9, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/315
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure is generally related to a magnetic recording device comprising a magnetic recording head having a first current flow in a cross-track direction through a trailing shield. In one or more embodiments, a second current flows in a cross-track direction around the main pole. The magnetic recording device comprises a main pole disposed between a trailing shield, a leading shield, and side shields. A trailing gap is disposed between the side shields and the trailing shield. A high moment seed layer is disposed between the main pole and the trailing shield. A first insulation layer is disposed within the trailing shield and directs the first current through the trailing shield, guided to the proximity of the main pole. A second insulation layer, disposed below the trailing shield, directs the second current through the trailing shield, or alternatively through the side shields and around the main pole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.