Production of RFeB magnet

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Provided is a method for producing an RFeB-based magnet, the method including : disposing a nozzle so as to be opposed to an attachment surface of a base material that is a sintered magnet or hot-plastic worked magnet composed of an RFeB-based magnet containing a light rare earth element RL that is at least one element selected from the group consisting of Nd and Pr, Fe, and B; ejecting a mixture, from the nozzle, obtained by mixing an organic solvent and an RH-containing powder containing a heavy rare earth element RH that is at least one element selected from the group consisting of Dy, Tb and Ho so as to attach the mixture to the attachment surface; and heating the base material together with the mixture.