Magnetic material comprising an intermetallic compound of the ra

Details Magnetic material comprising an intermetallic compound of the ra Magnetic material comprising an intermetallic compound of the ra

1988-10-24

1990-01-30

Sheehan, John P.

Metal treatment

Stock

Magnetic

420435, H01F 104

Patent

active

048971308

ABSTRACT:
A permanent magnetic material having a main phase of the R.sub.2 (Co.sub.1-x Fe.sub.x).sub.14 B type in which R represents Nd, Pr and/or Tb, or a combination of one of these with at least one other member of the group of rare earth metals and Y, and in which O.ltoreq.x.ltoreq.0.2. Magnets can be produced of this material by means of a powder-metallurgic process resulting in magnets having a combination of a high T.sub.c and a high .sub.I H.sub.c.

REFERENCES:
patent: 4541877 (1985-09-01), Stadelmaier et al.
patent: 4663066 (1987-05-01), Fruchart et al.
Herbst et al, "Relationship Between Crystal Structure and Magnetic Properties in Nd.sub.2 Fe.sub.14 B," Phy. Rev. B, vol. 29, No. 7, Apr. 1, 1984, pp. 4176-4178.

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