High density permanent magnet material and manufacturing method thereof

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The invention discloses a rare earth permanent magnet material which comprises alloy powder, the primary component of which is RFeMB, wherein R contains Nd or PrNd, and M is one or more of Co, Ga, Aland Cu. The rare earth permanent magnet material also comprises oxyfluoride powder, the component of which is CaRE2[CO3]F2, wherein RE is selected from one or more of Ce, La and Nd. In addition, the invention also discloses a method for preparing the rare earth permanent magnet material. Synchysite which is wide in source and lower in cost is combined with rare earth elements, so that the resistivity of the fully compacted magnet is improved obviously, and the thermal processing performance of the magnet is reduced greatly, and therefore, the eddy-current loss is reduced effectively.