Spindle-shaped magnetic iron based alloy particles and process for producing the same
US5599378A · kind A · utility
2Cited by
11References
8Claims
0Family size
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Key dates
| Filing date | May 25, 1995 |
| Grant date | Feb 4, 1997 |
| Priority date | — |
| Expiry date | May 25, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/061
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed herein are spindle-shaped magnetic iron based alloy particles containing at least one selected from the group consisting of Ni, Al, Si, P, Co, Mg, B and Zn, which have a particle length of 0.05 to 0.40 .mu.m, a crystallite size of 110 to 180 .ANG., a specific surface area of 30 to 60 m.sup.2 /g, a coercive force of 1,300 to 1,700 Oe and a saturation magnetization (.sigma.s) of not less than 100 emu/g and a process for producing the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.