YCO5-based compounds doped with Fe and Ni for high-performance permanent magnets

Patent metadata

Field	Value
Publication number	US-11837389-B2
Application number	US-202117398905-A
Country	US
Kind code	B2
Filing date	Aug 10, 2021
Priority date	Jan 17, 2017
Publication date	Dec 5, 2023
Grant date	Dec 5, 2023

Abstract

In accordance with one aspect of the presently disclosed inventive concepts, a magnet includes a material having a chemical formula: YFe3(Ni1-xCox)2, where x is greater than 0 and x is less than 1.

First claim

What is claimed is:

1. A magnet, comprising:
a material having a chemical formula: YFe 3 (Ni 1-x Co x ) 2 , wherein x is greater than 0 and x is less than 1, wherein a maximum energy product of the material is greater than about 351 kJ/m 3 .

2. A magnet as recited in claim 1 , wherein x is greater than 1−x.

3. A magnet as recited in claim 1 , wherein x is less than 1−x.

4. A magnet as recited in claim 1 , wherein x is about equal to 1−x.

5. A magnet as recited in claim 1 , wherein the magnet is a permanent magnet.

6. A magnet as recited in claim 1 , wherein a spin orientation of the Y atom is antiparallel to a spin orientation of the Fe, Ni, and Co atoms.

7. A magnet as recited in claim 1 , wherein a magnetocrystalline anisotropy energy of the material is about twice a magnetocrystalline anisotropy energy of Nd 2 Fe 14 B magnet.

8. A magnet as recited in claim 1 , wherein a magnetocrystalline anisotropy energy of the material is greater than about 10 MJ/m 3 .

9. A magnet as recited in claim 1 , wherein a Curie Temperature of the material is about equal to a Curie Temperature of YCo 5 .

10. A magnet as recited in claim 1 , wherein a Curie Temperature of the material is greater than about 1000 K.

11. A magnet as recited in claim 1 , wherein the amount of Co in the magnet is up to 80 at. % less Co than the amount of Co in YCo 5 .

12. A magnet, comprising:
a material having a chemical formula: YFe 3 (Ni 1-x Co x ) 2 , wherein x is greater than 0 and x is less than 1,
wherein the material has a CaCu 5 -type crystal structure,
wherein the Fe atoms are distributed in a plurality of transition metal 3g nonequivalent atomic sites,
wherein a maximum energy product of the material is greater than about 351 kJ/m 3 .

13. A magnet as recited in claim 12 , wherein the Ni atoms and the Co atoms are distributed in a plurality of transition metal 2c nonequivalent atomic sites.

14. A magnet, comprising:
a material having a chemical formula: YFe 3 (Ni 1-x Co x ) 2 , wherein x is greater than 0 and x is less than 1, wherein the material has a CaCu 5 -type crystal structure,
wherein the Ni atoms and the Co atoms are distributed in a plurality of transition metal 2c nonequivalent atomic sites,
wherein a maximum energy product of the material is greater than about 351 kJ/m 3 .

15. A magnet as recited in claim 14 , wherein x is about equal to 1−x.

16. A magnet as recited in claim 14 , wherein the Fe atoms are distributed in a plurality of transition metal 3g nonequivalent atomic sites, wherein a maximum energy product of the material is greater than about 351 kJ/m 3 .

17. A magnet as recited in claim 14 , wherein x is greater than 1−x.

Assignees

• L Livermore Nat Security Llc

Inventors

• Landa Alexander
• Soderlind Per
• Moore Emily
• Perron Aurelien

Classifications

• H01F1/047 Primary

  Alloys characterised by their composition · CPC title

• C22C30/00 Primary

  Alloys containing less than 50% by weight of each constituent · CPC title

• C22C2202/02

  Magnetic · CPC title

• H01F1/055

  and magnetic transition metals, e.g. SmCo5 · CPC title