Metal oxide magnetic substance and a magnetic film consisting thereof and their uses
US4670322A · kind A · utility
9Cited by
2References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1984 |
| Grant date | Jun 2, 1987 |
| Priority date | — |
| Expiry date | Nov 29, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention provides a metal oxide magnetic substance represented by the general formula I: EQU MeO.multidot.n[Al.sub.X M.sub.Y Fe.sub.2-x-(m/3)Y O.sub.3 ] (wherein, Me is at least one member of Ba, Sr and Pb, M is at least one member of Zn, Sc, In, Cr, Ir, Ru, Rh, Ti, Ta, Sn and Ge, 5.ltoreq.n.ltoreq.6, 0<X.ltoreq.0.8, 0<Y.ltoreq.0.6, and m is the ionic valency of M), a magnetic film consisting thereof, and a magneto optical recording medium and a perpendicular magnetic recording medium having the magnetic film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.