| 摘要 |
The present invention provides a rare-earth sintered magnet exhibiting desirable magnetic properties in which the amount of Nd and/or Pr forming a non-magnetic phase in a grain boundary phase is reduced. Specifically, the present invention provides a rare-earth sintered magnet having a composition of (R1<SUB>x</SUB>+R2<SUB>y</SUB>)T<SUB>100-x-y-z</SUB>Q<SUB>z </SUB>where R1 is at least one element selected from the group consisting of all rare-earth elements excluding La (lanthanum), Y (yttrium) and Sc (scandium); R2 is at least one element selected from the group consisting of La, Y and Sc; T is at least one element selected from the group consisting of all transition elements; Q is at least one element selected from the group consisting of B and C, and including, as a main phase, a crystal grain of an Nd<SUB>2</SUB>Fe<SUB>14</SUB>B crystalline structure, wherein: molar fractions x, y and z satisfy 8<=x<=18 at %, 0.1<=y<=3.5 at % and 3<=z<=20 at %, respectively; and a concentration of R2 is higher in at least a part of a grain boundary phase than in the main phase crystal grains.
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