Metal in gap magnetic head having metal magnetic film including precious metal layer
US5862023A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1997 |
| Grant date | Jan 19, 1999 |
| Priority date | — |
| Expiry date | Apr 23, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3113
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic head is disclosed which has a metal magnetic film formed by first stacking Fe--M--N magnetic thin film layers and precious metal layers such as Pt layers to form a multilayer film and then stacking such multilayer films via an insulating film so that the reproduction output is improved to make the magnetic head suitable for recording on and reproduction from a magnetic recording medium having a large coercive force, such as, a so-called metal tape. On gap forming surfaces of a pair of magnetic core halves, a multilayer structure formed by first forming a multilayer film by stacking magnetic thin film layers having composition of Fe.sub.x M.sub.y N.sub.z (with M being at least one selected from Ta, Zr, Hf, Nb, Ti, Mo and W, and x, y and z indicating atomic percentage and holding relations of 71.ltoreq.x.ltoreq.85, 6.ltoreq.y.ltoreq.15, and 9.ltoreq.z.ltoreq.16) and layers made of at least one selected from Pt, Au, Ag and Pd, and then stacking such multilayer films via at least two layers made of any one of SiO.sub.2, ZrO.sub.2, Al.sub.2 O.sub.3 and Cr.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.