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The basic mechanism by which certain materials (such as iron) form permanent magnets, or are attracted to magnets. Ferromagnetism manifests itself in the fact that a small externally imposed magnetic field can cause the magnetic domains to align and reinforce with each other, so that the material is said to be magnetized.

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Does the change in spontaneous magnetization of a ferromagnet due to temperature change caus...

Magnetic field changing in time will create an electric field, yes. But this has nothing to do with conductivity. Conductivity is basicaly dependent on the free charges you have in your media (electro …
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