Method of manufacture of a composite shared pole design for magnetoresistive merged heads
US6393692B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1999 |
| Grant date | May 28, 2002 |
| Priority date | — |
| Expiry date | Apr 1, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49046
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A merged read/write magnetic recording head comprises a low magnetic moment first magnetic shield layer over a substrate. A read gap layer with a magnetoresistive head is formed over the first shield layer. A shared pole comprises a low magnetic moment second magnetic shield layer plated on a sputtered seed PLM layer over the read gap layer, a non-magnetic layer plated over the PLM layer and a HMM lower pole layer plated over the second magnetic shield layer. A write gap layer is formed over the first high magnetic moment pole layer of the shared pole. An upper pole comprises a high magnetic moment pole layer over the write gap layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.