Method for manufacturing a magnetic powder for high density...

Details Method for manufacturing a magnetic powder for high density... Method for manufacturing a magnetic powder for high density...

G - Physics

11

B

31/137

G11B 5/706 (2006.01) C01G 51/00 (2006.01)

Patent

CA 1188882

- 22 - Abstract of the Disclosure 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.

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