Magnetic write head with side shield and gap layer
US8233236B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2008 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | May 31, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3116
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic write head includes a main pole, a return yoke forming a magnetic path with the main pole, a side shield formed at both sides of the main pole, and a shield gap layer formed between the side shield and the return yoke. The side shield and the return yoke have portions connected to each, and are separated from each other by the shield gap layer in an area except for the portions which contact. A first gap layer formed of a nonmagnetic insulation material is formed between both sides of the main pole and the side shield. A gap is formed between an end portion of the main pole and an end portion of the return yoke and a second gap layer is formed in the gap with a nonmagnetic insulation material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.