Invention Grant
- Patent Title: Rare earth based magnet
-
Application No.: US14228808Application Date: 2014-03-28
-
Publication No.: US10096412B2Publication Date: 2018-10-09
- Inventor: Eiji Kato , Yoshinori Fujikawa , Taeko Tsubokura , Chikara Ishizaka , Katsuo Sato
- Applicant: TDK CORPORATION
- Applicant Address: JP Tokyo
- Assignee: TDK CORPORATION
- Current Assignee: TDK CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JP2013-067863 20130328; JP2013-263369 20131220
- Main IPC: H01F1/153
- IPC: H01F1/153 ; H01F1/053 ; H01F1/057 ; H01F41/02
Abstract:
The present invention provides a rare earth based magnet including R2T14B main-phase crystal grains, and two-grain boundary phases between adjacent two R2T14B main-phase crystal grains, the two-grain boundary phases are controlled such that the thickness thereof is 5 nm or more and 500 nm or less, and it is composed of a phase with a magnetism different from that of a ferromagnet.
Public/Granted literature
- US20140290803A1 RARE EARTH BASED MAGNET Public/Granted day:2014-10-02
Information query
