What is the difference between parallel magnetization and radial magnetization of tile magnets?

Tile magnets (magnetic tiles) are commonly magnetized in three ways: radial magnetization, width magnetization and thickness magnetization. Today, netizens asked what is the difference between parallel magnetization and radial magnetization of tile magnets?

Parallel magnetization, we can understand that the entry and exit of magnetic lines of force in the axial direction is parallel magnetization.

In the applied motor, the flux leakage between poles of radial magnetization is also significantly greater than that of parallel magnetization. The air gap flux density of radial magnetization tends to rectangular wave, which is more suitable for brushless DC motor and DC motor. Parallel magnetization is better for the inner rotor structure, and vice versa for the outer rotor structure.