Title:
R-T-B-BASED SINTERED MAGNET AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2023/234046
Kind Code:
A1
Abstract:
This R-T-B-based sintered magnet (R represents a rare earth element including Nd, and T represents a transition metal element including Fe) comprises, as a rare earth element, at least dysprosium (Dy). When the value of saturation remnant magnetization of the R-T-B-based sintered magnet is noted as B, and the value of magnetization indicated by an initial magnetization curve when an external magnetic field of 500 kA/m is applied to the R-T-B-based sintered magnet is noted as A, the magnetization ratio A/B is smaller than 1.0 (but greater than 0) and the pole pitch in the R-T-B-based sintered magnet is less than 4 mm (but greater than 0 mm).
Inventors:
OKAWARA YU (JP)
KOMURA HARUHIRO (JP)
KOMURA HARUHIRO (JP)
Application Number:
PCT/JP2023/018558
Publication Date:
December 07, 2023
Filing Date:
May 18, 2023
Export Citation:
Assignee:
MINEBEA MITSUMI INC (JP)
International Classes:
H01F41/02; B22F1/00; C22C33/02; H01F1/057; H01F13/00
Foreign References:
| JP2021093521A | 2021-06-17 | |||
| JP2019102583A | 2019-06-24 | |||
| JP2006295122A | 2006-10-26 |
Attorney, Agent or Firm:
TORANOMON INTELLECTUAL PROPERTY FIRM (JP)
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