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

Claim 4:
5. A manufacturing method of the Sm—Fe—N-based magnetic material according to claim 1, the method comprising:
preparing a magnetic material precursor including a crystal phase having a composition represented by a molar ratio formula (Sm(1-x-y-z)LaxCeyR1z)2(Fe(1-p-q-s)CopNiqMs)17, 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, and 0≤s≤0.02, are satisfied; and
nitriding the magnetic material precursor.