R a-T a-B based sintered magnet

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The present invention discloses a method for manufacturing an R-T-B-based sintered magnet, including : a step for preparing an R1-T1-B-based sintered body; a step for preparing an R2-Ga-Cu-Co-based alloy; a step for executing, by bringing at least a section of the alloy into contact with at least a section of a surface of the sintered body, a first heat treatment in a vacuum or inert-gas atmosphere at a temperature of 700ºC to 1100ºC; and a step for executing, on the R1-T1-B-based sintered body that has been subjected to the first heat treatment, a second heat treatment in the vacuum or inert-gas atmosphere at a temperature of 450ºC to 600ºC. R1 and R2 are at least one type of rare-earth element, and at least one of Nd and Pr is always included. The molar ratio of T1 with respect to B ([T1]/[B]) is greater than 14.0 and equal to or less than 15.0.