Magnetic transducer with a write head having a multi-layer coil
US7079355B2 · kind B2 · utility
21Cited by
8References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2004 |
| Grant date | Jul 18, 2006 |
| Priority date | — |
| Expiry date | Dec 10, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49064
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for producing a magnetic transducer with an inductive write head having a multilayer coil with a high aspect ratio and a short yoke is disclosed. A damascene process is used for two coil layers and a conventional process for the third coil layer. The process of the invention allows a seed layer for the coil to be deposited on the side walls of the trenches for the first and second coil layers. In one embodiment the seed layer for the coil is preceded by an adhesion layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.