To provide a high-performance permanent magnet. Permanent magnet composition _formula represented by _{R p Fe q M r Cu t} Co 100-p-q-r-t. Permanent magnets comprises a crystal grain having a Th ₂ Zn ₁₇ crystal phase, and the crystal grains of the crystal grain boundaries, a sintered body having a. In the sintered body, when the oxide phase of the R element and oxygen concentration is one continuous area is 85 atomic% or more R elements, with respect to the number of crystal grains, the number of oxide phase existing in the grain boundary the ratio of is 1.1 or less.