Permanent magnet, motor rotor or stator, dynamo-electric machine

By cutting the permanent magnet comprises a permanent magnet blocks is formed with two or more divided permanent magnet cut surface of the cuboid. The divided permanent magnet having a first magnet and a second permanent division divided permanent magnet. Dividing said first permanent magnet and said second permanent magnet is divided at the adjacent permanent magnet blocks is truncated, and the first division of the first permanent magnet and the cut surface of the second permanent magnet is divided two adjacent cut surface portion. In the permanent magnet, said first permanent magnet first divided surface and the second cut of the second cut surface dividing the permanent magnet is arranged in a position not in contact.