Method of manufacturing permanent magnet of rotor for axial flux electric machine yielding permanent magnet with low loss and low cost

A method of manufacturing a permanent magnet for a rotor of an axial flux electric machine, the method comprising:

• forming multiple permanent magnet (PM) pieces to have the same shape, each of the PM pieces having an inner radial surface, an outer radial surface, and a pair of side surfaces extending between the inner and outer radial surfaces;
• attaching at least one of the side surfaces of each of the PM pieces to one of the side surfaces of another one of the PM pieces to form partitions configured to extend in a radial direction of the rotor;
• and
• cutting through at least a portion of the multiple PM pieces, to form partitions configured to extend in a tangential direction of the rotor.