Claims
- 1. A method for producing a magnetically anisotropic magnetic material, the method comprising the steps of:a. synthesizing metal amides; b. aminolyzing, polymerizing and condensing said metal amides to produce polymerized metal amides precursor; and c. heating said polymerized metal amides precursor at a temperature within the range of 500° C. to 700° C. in an inert or reduced atmosphere for a period of time between 1 to 5 hours to produce magnetic powder having a main phase of formula: Rχ(Fe1−δMδ)yNαCβ wherein R is at least one element selected from Nd, Pr, La, Ce, Th, Dy, Ho, Er, Eu, Sm, Gd, Pm, Tm, Yb, Lu, and Y; M is at least one element selected from Ti, V, Cr, Mn, Fe, Co, Ni, Zr, Nb, Mo, Hf, Ta, W, B, Al, Si, P, Ga, Ge, and As; χ is 0.1-8.5; y is 14-19; δ is 0-0.95; α is 0.05-4; and β is 0-4.
- 2. The method in accordance with claim 1, wherein said inert atmosphere is vacuum.
- 3. The method in accordance with claim 1, wherein said inert atmosphere is nitrogen.
- 4. The method in accordance with claim 1, wherein said inert atmosphere is argon.
- 5. The method in accordance with claim 1, wherein said reduced atmosphere is ammonia.
- 6. A method for producing a magnetically anisotropic magnetic material, the method comprising the steps of:a. synthesizing metal amides; b. aminolyzing, polymerizing and condensing said metal amides to produce polymerized metal amides precursor; and c. heating said polymerized metal amides precursor at a temperature within the range of 200° C. to 400° C. in an inert or reduced atmosphere for a period of time between 1 to 5 hours to produce amorphous powder; d. pressing said amorphous powder into a polymerized green body; e. heating said polymerized green body at a temperature within the range of 500° C. to 700° C. in an inert or reduced atmosphere for a period of time between 1 to 5 hours to produce a shaped magnet having a main phase of formula: Rχ(Fe1−δMδ)yNαCβ wherein R is at least one element selected from Nd, Pr, La, Ce, Tb, Dy, Ho, Er, Eu, Sm, Gd, Pm, Tm, Yb, Lu, and Y; M is at least one element selected from Ti, V, Cr, Mn, Fe, Co, Ni, Zr, Nb, Mo, Hf, Ta, W, B, Al, Si, P, Ga, Ge, and As; χ is 0.1-8.5; y is 14-19; δ is 0-0.95; α is 0.05-4; and β is 0-4.
- 7. The method in accordance with claim 6, wherein said inert atmosphere is vacuum.
- 8. The method in accordance with claim 6, wherein said inert atmosphere is nitrogen.
- 9. The method in accordance with claim 6, wherein said inert atmosphere is argon.
- 10. The method in accordance with claim 6, wherein said reduced atmosphere is ammonia.
Government Interests
This invention was made with Government support under contract DE-FG03-93ER81570 awarded by the Department of Energy. The Government has certain rights in this invention.
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