Production of fine ferrimagnetic spinels
US4486401A · kind A · utility
7Cited by
1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1983 |
| Grant date | Dec 4, 1984 |
| Priority date | — |
| Expiry date | Mar 14, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/36
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides an improved gel precipitation method for producing a Ni.sub.0.7 Zn.sub.0.3 Fe.sub.2 O.sub.4 type of ferrimagnetic spinel powder which has an average particle size of less than about 1000 angstroms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.