Compositions – Magnetic – Iron-oxygen compound containing
Patent
1982-09-08
1986-02-11
Cooper, Jack
Compositions
Magnetic
Iron-oxygen compound containing
252 6258, 252 6263, C04B 3526
Patent
active
045697752
ABSTRACT:
A method for preparing a magnetic powder for high density magnetic recording includes melting a mixture containing the fundamental component of a hexagonal ferrite, a substituting component for reducing the coercive force, and boron trioxide as a glass forming substance in predetermined amounts. The resultant molten material is rapidly cooled to obtain an amorphous body which is then heat-treated to produce desired substituted type hexagonal ferrite particles in the glass matrix.
REFERENCES:
patent: 4341648 (1982-07-01), Kubo et al.
M. Fahmy et al., "Magnetic Properties, Microstructure, and Ultra-Structure of Partially Crystallised B.sub.2 O.sub.3 -BaO-Fe.sub.2 O.sub.3 Glass," Physics and Chemistry of Glasses, vol. 13, No. 2; 1972; pp. 21-26.
Hideo Tanigawa et al., "Studies on Magnetic Microcrystalline Produced by Crystallization of Glasses in the System B.sub.2 O.sub.3 -BaO-Fe.sub.2 O.sub.3," Osaka Kogyo Gigyutsu Shikenjo (Industrial Technology Laboratory) Report, vol. 15; Oct. 1964; pp. 285-293.
B. T. Shirk et al., "Theoretical and Experimental Aspects of Coercivity Versus Particle Size for Barium Ferrite," IEEE MAG-7, 1971; pp. 659-663.
Ido Tadashi
Inomata Koichiro
Kubo Osamu
Nomura Tutomu
Cooper Jack
Tokyo Shibaura Denki Kabushiki Kaisha
LandOfFree
Method for manufacturing a magnetic powder for high density magn does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for manufacturing a magnetic powder for high density magn, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for manufacturing a magnetic powder for high density magn will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1204056