Magnetic head having cobalt-containing zinc-ferrous ferrite core
US4594628A · kind A · utility
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2References
6Claims
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Assignee
Inventors
Key dates
| Filing date | Jan 14, 1983 |
| Grant date | Jun 10, 1986 |
| Priority date | — |
| Expiry date | Jan 14, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/133
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic head for a magnetic recording and playback device includes a core having two core parts which are spaced from each other and between which a transducing gap is formed. The core consists of a (preferably monocrystalline) zinc-ferrous ferrite. A preferred range of compositions is defined by the formula EQU Zn.sub.a Fe.sub.1-a.sup.II Fe.sub.2.sup.III O.sub.4, wherein 0.1.ltoreq.a.ltoreq.0.4. The Zn-ferrous ferrite may further comprise additions of Co.sup.II.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.