Magnetic head and method of producing the same
US5675460A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1995 |
| Grant date | Oct 7, 1997 |
| Priority date | — |
| Expiry date | Oct 10, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/1878
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic head of the type which includes a pair of magnetic cores joined to each other through the intermediation of gap layers, with Fe-type metal magnetic thin films being arranged between the gap layers and the magnetic cores, the metal magnetic thin films being formed of a magnetic material which can be represented by the composition formula: Fe-X-M-C, with the concentration of the element X being higher in the surface portions of the metal magnetic thin films than in the other portions thereof. In the above composition formula, X represents one or two or more of the following elements: Al, Si, Cr, Mo and W, and M represents one or two or more of the following elements: Ti, V, Zr, Nb, Hf and Ta. Due to this construction, the metal magnetic thin films can contain the element X at high concentration in the surface portions thereof, which element combines with oxygen in the surface portions to generate an oxide coating, thereby providing a magnetic head excelling in corrosion resistance. When, in a magnetic head containing Al in the metal magnetic thin films, the Al is contained at higher concentration in the film surface portions, it is possible to generate an Al oxide to impro…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.