Why ferromagnetic substances make better permanent magnets

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 Why ferromagnetic substances make better permanent magnets?

Ans- This is because the metal ions in a ferromagnetic substances are grouped into small regions called domains and each domain acts at a tiny magnet. These domans are randomly oriented, but when a ferromagnetic substances is placed in a magnetic field all the domains get oriented in the duration of the magnetic field which produces a strong magnetic field. This permanent magnetism persists even when the external magnetic field is removed. Therefore, ferromagnetic substances make better permanent magnet.

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