DocumentCode :
1049908
Title :
Preparation of magnetic alloy particles from metal and phthalate ions in dimethyl sulfoxide
Author :
Johnson, H. Kenneth, II
Author_Institution :
IBM Corporation, Boulder, Colo.
Volume :
8
Issue :
3
fYear :
1972
fDate :
9/1/1972 12:00:00 AM
Firstpage :
471
Lastpage :
472
Abstract :
Magnetic particles suitable for recording media are prepared by dissolving a metal salt (nickel, cobalt, iron, or their mixtures) in dimethyl sulfoxide to form a metal complex which is reacted with the phthalate ion (also dissolved in dimethyl sulfoxide) to produce the metal phthalate which precipitates with addition of water. The supernatant liquid is decanted, leaving the precipitate, which is washed with an aqueous solution to remove residual dimethyl sulfoxide. Reduction of the dried precipitate in the presence of hydrogen forms magnetic particles, cubic in structure, and of a particle size averaging between 0.03 and 1.5 microns.
Keywords :
Magnetic recording materials; Cobalt; Displays; Furnaces; Hydrogen; Iron; MONOS devices; Magnetic particles; Magnetic recording; Nickel; Saturation magnetization;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.1972.1067381
Filename :
1067381
Link To Document :
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