Magnetic head
US6424490B1 · kind B1 · utility
0Cited by
8References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2000 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Dec 26, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/232
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic head shows a remarkably reduced eddy-current loss. The metal magnetic film 5 of the magnetic core of the magnetic head has a multilayer structure obtained by laying alternately metal magnetic layers 10 and insulating layers 11. The nonmagnetic film 6 of the magnetic head that provides a magnetic gap is also made to have a multilayer structure obtained by arranging first films 20 made of an insulating material, second films 21 made of Cr and a third film 22 made of Au as mentioned from the sides held in contact with the metal magnetic film 5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.