Method of making ferromagnetic ultrafine particles

Details Method of making ferromagnetic ultrafine particles Method of making ferromagnetic ultrafine particles

1992-03-23

1993-06-22

Wyszomierski, George

Specialized metallurgical processes, compositions for use therei

Processes

Producing or purifying free metal powder or producing or...

75349, B22F 922

Patent

active

052213226

ABSTRACT:
Ultrafine particles of Fe-Co-P material with a Fe/Co atomic ratio of from 95/5 to 70/30 and a (Fe+Co)/P atomic ratio of from 85/15 to 60/40 show improved ferromagnetic properties. The average particle size is from 0.005 to 0.1 .mu.m. Such ultrafine particles are prepared through gas phase reaction by evaporating a source material. They are useful in both magnetic and thermomagnetic recording media ensuring high density recording.

REFERENCES:
patent: 4305753 (1981-12-01), French

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