Magnetization method and magnetization apparatus

A magnetization apparatus for magnetizing a plurality of magnetic bodies in which at least a first magnetic body, a second magnetic body, and a third magnetic body are aligned, the magnetization apparatus comprising:

• at least one memory storing instructions;
• and
• at least one processor configured to execute the instructions to do a heteropolar magnetization process for generating heteropolar magnetic fields in a first magnetization yoke and a second magnetization yoke that are opposed to each other in a radial direction with the first magnetic body before magnetization interposed therebetween and generating heteropolar magnetic fields in a third magnetization yoke and a fourth magnetization yoke that are opposed to each other in a radial direction with the third magnetic body before magnetization interposed therebetween, wherein
• in the heteropolar magnetization process, an amount of magnetic flux that flows through the first magnetic body is made larger than an amount of magnetic flux that flows through the third magnetic body.