Ferrite magnet and method for producing same

Details Ferrite magnet and method for producing same Ferrite magnet and method for producing same

1997-12-29

1999-09-28

Koslow, C. Melissa

Compositions

Magnetic

Iron-oxygen compound containing

252 6259, 252 6257, C04B 3540, C04B 3535

Patent

active

059582847

ABSTRACT:
The ferrite magnet having a composition represented by the general formula: atomic ratio), wherein A is Sr and/or Ba, R is at least one element selected from the group consisting of La, Nd, Pr, Sm, Eu and Gd, La being indispensable, M is at least one element selected from the group consisting of Mn, Co and Ni, and x, y and n meet 0.05.ltoreq.x.ltoreq.0.5, x/(2.4n).ltoreq.y.ltoreq.x/(1.6n) and 5.4.ltoreq.n.ltoreq.6.0, respectively is produced by preparing a starting material powder having the above composition and an average particle size of 0.4-0.7 .mu.m, and subjecting the starting material powder to molding in a magnetic field and then to sintering.

REFERENCES:
patent: 4636433 (1987-01-01), Kubo et al.

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