Hard Magnetic Alloys of a Transition Metal and Lanthanide.
DEPARTMENT OF THE NAVY WASHINGTON DC
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A hard magnetic alloy comprises iron, boron, lanthanum, and a lanthanide and is prepared by heating the corresponding amorphous alloy to a temperature from about 850 to 1200 K. in an inert atmosphere until a polycrystalline multiphase alloy with an average grain size not exceeding 400 angstroms is formed.
- Metallurgy and Metallography