Patent ID: 11935676
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Materials, metallurgy (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 0:
1. An Sm—Fe—N-based magnetic material comprising a main phase having at least any one of Th2Zn17 type and Th2Ni17 type crystal structures, wherein:
the main phase has a composition represented by a molar ratio formula (Sm(1-x-y-z)LaxCeyR1z)2(Fe(1-p-q-s)CopNiqMs)17Nh, wherein:
R1 is one or more rare earth elements other than Sm, La, and Ce, and Zr,
M is (i) an unavoidable impurity element or (ii) the unavoidable impurity element and at least one element other than Fe, Co, Ni, or a rare earth element, and
0≤x+y≤0.01, 0≤z≤0.10, 0.01≤p+q≤0.04, 0≤s≤0.02, and 2.9≤h≤3.1 are satisfied;
a lattice volume of the main phase is 0.830 nm3 to 0.840 nm3 and
a density of the main phase is 7.70 g/cm3 to 8.00 g/cm3.