Permanent magnet with composition having metallic structure with cell phase type crystal and average distance between platelet phases

A permanent magnet comprising:

• a composition represented by a composition formula:
• RpFeqMrCutCo100-p-q-t (where, R is at least one element selected from rare earth elements, M is at least one element selected from Zr, Ti, and Hf, p is a number that satisfies 10.0 at %≤p≤14.5 at %, r is a number that satisfies 1.5 at %<r≤4.2 at %, t is a number that satisfies 0.5 at %≤t≤9.0 at %, and q is a number that satisfies 17.0 at %≤q≤25.8 at %) where at % is atomic percent and “100-p-q-r-t” is a formular that represents the atomic percentage of the chemical element Co;
• and
• a metallic structure including a cell phase having a Th2Zn17 type crystal phase, a cell wall phase formed so as to partition the Th2Zn17 type crystal phase, and a platelet phase formed so as to intersect with a c-axis of the Th2Zn17 type crystal phase,
• wherein an average distance between the platelet phases is 10 nm or more and 30 nm or less.