Thin film magnetic head with Ni-Fe alloy thin film
US6262867A · kind A · utility
12Cited by
9References
3Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 26, 2000 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Jul 26, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/3996
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A thin film magnetic head and a disk storage system having a magnetic disk and the thin film magnetic head provided on a floating type slider. The thin film magnetic head has an upper magnetic core and a lower magnetic core, wherein the upper magnetic core and the lower magnetic core are made of an electroplated thin film having sufficient average crystal grain size. The upper magnetic core is made of a Ni--Fe alloy having Ni of 38 to 60 wt % and Fe of 40 to 62 wt %, and the crystal grain size is smaller than 500 .ANG..
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.