Rare Earth Magnet Basics / Glossary of Magnet Terms / Spontaneous magnetization
- Spontaneous magnetization
- This is magnetization that occurs in the state in which a magnetic body has its atomic magnetic moments aligned without being affected by an external magnetic field. Normally, magnetic bodies have a magnetic domain structure and it is observed that spontaneous magnetization does not occur, but spontaneous magnetization is measured in single crystals and other single domain states. For a strongly magnetic body, spontaneous magnetization is maximum at absolute zero degrees. As the temperature rises, the magnetic moment of each atom decreases due to heat fluctuation and it disappears at the Curie temperature.
