R-T-B-BASED RARE EARTH PERMANENT MAGNET, MOTOR, AUTOMOBILE, POWER GENERATOR, AND WIND POWER-GENE

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An R-T-B-based rare earth permanent magnet including a sintered compact having a main phase mainly including R2Fe14B and grain boundary phases including more R than the main phase, in which R refers to rare earth elements including Nd as an essential element, the sintered compact includes Ga as an essential elements, the grain boundary phases include a first grain boundary phase, a second grain boundary phase, and a third grain boundary phase which have different total atomic concentrations of the rare earth elements, and the third grain boundary phase has a lower total atomic concentration of the rare earth elements than the first grain boundary phase and the second grain boundary phase, and has a higher atomic concentration of Fe than the first grain boundary phase and the second grain boundary phase.