ferromagnetic vs paramagnetic

Question

Ferromagnetic materials exhibit?

RankGuru · Accepted Answer

1. **Definition**: Ferromagnetism is the property of certain materials (like Iron, Nickel, Cobalt) to undergo spontaneous magnetization even in the absence of an external field.
2. **Domain Theory**: These materials consist of tiny regions called **domains** where atomic magnetic moments are already aligned parallel due to exchange interactions.
3. **Effect of Field**: An external field causes these domains to grow or rotate, leading to a massive net magnetization.
4. **Conclusion**: They show strong attractive properties and can become permanent magnets through the alignment of these domains.

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ferromagnetic vs paramagnetic

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