R-FE-B ANISOTROPIC SINTERED MAGNET

摘要

An R-Fe-B based anisotropic sintered magnet according to the present invention has, as a main phase, an R 2 Fe 14 B type compound that includes a light rare-earth element RL (which is at least one of Nd and Pr) as a major rare-earth element R, and also has a heavy rare-earth element RH (which is at least one element selected from the group consisting of Dy and Tb). In the crystal lattice of the main phase, the c-axis is oriented in a predetermined direction. The magnet includes a portion in which at least two peaks of diffraction are observed within a 2¸ range of 60.5 degrees to 61.5 degrees when an X-ray diffraction measurement is carried out using a CuK ± ray on a plane that is located at a depth of 500 µm or less under a pole face of the magnet and that is parallel to the pole face.