US 11,837,393 B2
Iron-based nanoparticles and grains
Jian-Ping Wang, Shoreview, MN (US); Bin Ma, Roseville, MN (US); Jinming Liu, Minneapolis, MN (US); Yiming Wu, Shoreview, MN (US); and YanFeng Jiang, Minneapolis, MN (US)
Assigned to Regents of the University of Minnesota, Minneapolis, MN (US)
Filed by REGENTS OF THE UNIVERSITY OF MINNESOTA, Minneapolis, MN (US)
Filed on Sep. 30, 2021, as Appl. No. 17/490,800.
Application 17/490,800 is a continuation of application No. 16/340,031, granted, now 11,161,175, previously published as PCT/US2017/055531, filed on Oct. 6, 2017.
Claims priority of provisional application 62/405,661, filed on Oct. 7, 2016.
Prior Publication US 2022/0080500 A1, Mar. 17, 2022
Int. Cl. H01F 1/06 (2006.01); C22C 38/00 (2006.01); B22F 1/16 (2022.01); B22F 1/054 (2022.01); B22F 9/04 (2006.01); C23C 8/26 (2006.01); C23C 8/50 (2006.01); C23C 8/80 (2006.01); H01F 1/055 (2006.01); H01F 1/059 (2006.01); C22C 38/10 (2006.01); B22F 1/06 (2022.01)
CPC H01F 1/065 (2013.01) [B22F 1/054 (2022.01); B22F 1/0553 (2022.01); B22F 1/06 (2022.01); B22F 9/04 (2013.01); C22C 38/00 (2013.01); C22C 38/001 (2013.01); C22C 38/10 (2013.01); C23C 8/26 (2013.01); C23C 8/50 (2013.01); C23C 8/80 (2013.01); H01F 1/059 (2013.01); H01F 1/0551 (2013.01); H01F 1/061 (2013.01); B22F 1/0547 (2022.01); B22F 2301/35 (2013.01); B22F 2302/20 (2013.01); B22F 2304/054 (2013.01); H01F 1/0552 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A nanoparticle comprising:
an iron-based core, wherein the iron-based core comprises elemental iron and a″-Fe16N2; and
a shell, wherein the shell comprises an anti-ferromagnetic material, wherein the shell has a thickness of about 10 nm;
wherein the nanoparticle has a coercivity of at least about 600 Oe.