Thin film magnetic head including durable wear layer and non-magnetic gap structures
US5801909A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 1996 |
| Grant date | Sep 1, 1998 |
| Priority date | — |
| Expiry date | May 20, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/4893
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A thin film magnetic head is fabricated on a substrate by depositing a seed layer on the substrate. A lower magnetic layer is plated on the substrate in an opening provided in an insulative layer which is deposited on the seed layer. A plurality of magnetic layers are plated at one end of the lower magnetic layer to build-up and form a first side pole by using the above seed layer as a seed. Another plurality of magnetic layers are plated at the other end of the lower magnetic layer to build-up and form a second side pole by using the same seed layer as a seed. The first and second side poles thus formed include upper and lower ends, the lower ends being plated to the ends of the lower magnetic layer. A first upper pole is plated to the upper end of the first side pole. The first upper pole includes a gap end facing the second side pole. A gap region of nonmagnetic material is deposited adjacent the gap end of the first upper pole. A second upper pole is plated to the upper end of the second side pole and includes a gap end adjacent the gap region. A diamond-like carbon (DLC) frame is fabricated at the uppermost portion of the head surrounding the upper side poles and gap region. T…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.