Preparation of hard magnetic alloys of a transition metal and la

Details Preparation of hard magnetic alloys of a transition metal and la Preparation of hard magnetic alloys of a transition metal and la

1983-09-06

1985-08-06

Sheehan, John P.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148108, H01F 102

Patent

active

045334080

ABSTRACT:
A method of preparing alloy of a transition metal and lanthanide comprising the steps of alloying a transition metal, boron, at least one lower-weight lanthanide having none or few stable compounds with iron, optionally one or more higher-weight lanthanides, a glass former, and optionally the pseudo lanthanide, yttrium; forming an amorphous or nearly amorphous metastable microstructure in the alloy; and heating the amorphous alloy to form a polycrystalline, multiphase, fine-grain single-domain structure.

REFERENCES:
patent: 4402770 (1983-09-01), Koon
Becker, "Surface Effects in Hysteresis Loop Shapes in High-Coercive-Force Crystallized Amorphous Alloys," IEEE Transactions on Magnetics, vol. MAG. 18, No. 6, Nov. 1982, p. 1451.
Koon et al., "Composition Dependence of the Coercive Force and Microstructure of Crystallized Amorphous (Fe.sub.x B.sub.1-x).sub.0.9 Tb.sub.0.05 La.sub.0.05 Alloys", IEEE Transactions on Magnetics, vol. MAG. 18, No. 6, Nov. 1982, p. 1448.

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