| 简介 |
The purpose of the present invention is to provide a sintered magnet enabling both a reduction in the amount of rare-earth elements used in the magnet material and further improvement of magnetic properties. The sintered magnet of the present invention comprises at least three phases, a high saturation magnetization phase having a saturation magnetic flux density of 1.6 to 2.7 T at 20 ºC and containing iron (Fe) or an iron alloy, a highly anisotropic phase having a crystal magnetic anisotropy energy of 0.5 to 20 MJ/m3 and containing a rare-earth element, and a grain boundary phase containing fluorine (F), wherein when the crystal lattice of the high saturation magnetization phase and the crystal lattice of the highly anisotropic phase are shown as an axis (c) and an axis (a) respectively, the ratio of the axes (c/a) is greater than or less than 1.000. |
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