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What type of substances would make bette...

What type of substances would make better permanenet magnets, ferromagnetic or ferrimagnetic. Justify your answer.

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Ferromagnetic substances make better permanent magnets. This is because the metal ions of a ferromagnetic substance are grouped into small regions called ‘domains’. Each domain acts as a tiny magnet. These domains are randomly oriented. When the substance is placed in a magnetic field, all the domains get oriented in the direction of magnetic field and a strong magnetic field is produced. This ordering of domains persists even when the external magnetic field is removed. Hence, the ferromagnetic substance becomes a permanent magnet.
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