Thin film magnetic head
US6826013B2 · kind B2 · utility
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2References
10Claims
0Family size
Assignee
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Key dates
| Filing date | May 30, 2001 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | May 30, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3163
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A thin film magnetic head comprising a substrate, a lower magnetic pole provided on the substrate, a write gap layer located on the lower magnetic pole, and an upper magnetic pole located on the gap layer, the upper magnetic pole including a plating base layer in contact with the gap layer, wherein the plating base layer of the upper magnetic pole is made of a magnetic film having a saturation magnetic flux density of 1.2 T or larger. The thin film magnetic head has an increased recording density, and is adapted to recording at an increased frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.