公开(公告)号：US20220148771A1

公开(公告)日：2022-05-12

申请号：US17438690

申请日：2020-03-13

Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY

Inventor： Yusuke HIRAYAMA ,  Akihide HOSOKAWA ,  Kenta TAKAGI

IPC: H01F1/059 ,  C30B29/52 ,  H01F7/02

Abstract: A single crystal particle powder having a crystal structure of TbCu7-type of the present invention is represented by the general formula: [Chemical Formula 1] (R1-zMz)Tx  (1) or the general formula: [Chemical Formula 2] (R1-zMz)TxNy  (2) and has a crystal structure of TbCu7-type, wherein R is at least one element selected from the group consisting of Sm and Nd, T is at least one element selected from the group consisting of Fe and Co, x is 7.0≤x≤10.0, y is 1.0≤y≤2.0, and z is 0.0≤z≤0.3.