| 简介 |
Provided are : a sintered body that forms a rare-earth magnet and is configured in a manner such that the divergence between the orientation angles of the easy axes of magnetization of magnet material particles and the orientation axis angle of the magnet material particles is kept within a prescribed range in an arbitrary micro-section of a magnet cross-section; and a rare-earth sintered magnet. This sintered body for forming a rare-earth magnet has two or more different regions exhibiting an orientation axis angle of at least 20°, given that the orientation axis angle is defined as the highest-frequency orientation angle among the orientation angles of the easy magnetization axes, relative to a pre-set reference line, of a plurality of magnet material particles in a rectangular section at an arbitrary position in a plane including the thickness direction and the widthwise direction. The orientation-angle variance angle is 16.0° or less relative to said orientation axis angle, given that the orientation-angle variance angle is defined on the basis of the difference between the orientation angles of the easy magnetization axes of the magnet material particles. One embodiment defines said section as a rectangular section containing 30 or more magnet material particles, and for example, containing 200 or 300 magnet material particles. It is preferable for the rectangular section to be a square. Another embodiment defines said section as a square section having 35μm sides. |
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