Sphere-like magnetite particles and a process for producing the

Details Sphere-like magnetite particles and a process for producing the Sphere-like magnetite particles and a process for producing the

1989-01-11

1991-02-12

Russel, Jeffrey E.

Compositions

Magnetic

Iron-oxygen compound containing

H01F 111

Patent

active

049921916

ABSTRACT:
Disclosed herein are sphere-like magnetite particles showing an apparent density of from 0.40 to 1.00 g/cm.sup.3 and a high thermo-stability and containing from 0.1 to 5.0 atomic % of Si to Fe, and a process for producing the sphere-like magnetite particles.

REFERENCES:
patent: 802928 (1905-10-01), Fireman
Hunter, "A Multipurpose Photoelectric Reflectometer". J. Opt. Soc. Am., vol. 30, pp. 536-559 (1940).
Foner, "Versatile and Sensitive Vibrating-Sample Magnetometer", The Review of Scientific Instruments, vol. 30, No. 7, pp. 548-557 (1959).
Journal of the Japan Society of Powder and Powder Metallurgy--Autumn 1971 Meeting. Translated Summary of Lecture.

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