Shin-Etsu Rare Earth Magnets

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Ferromagnetism

A magnetic property in which the magnetic moments in a material are oriented in parallel through exchange interaction. A material that demonstrates this magnetic property is called a ferromagnetic body. As a result of the magnetic moments being aligned in parallel, a ferromagnetic body has spontaneous magnetization, but because a magnetization domain structure is used, normally in the initial state, the magnetization is zero. In the narrow sense, strongly magnetic means ferromagnetic. When a ferromagnetic body reaches the Curie temperature, thermal vibration disrupts the alignment of the moments and the body becomes paramagnetic.

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Glossary list