Structural alignment in ferromagnetism

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In ferromagnetism, it is essential to specify that it is the alignment of electrons, particularly their spins, that leads to magnetic properties, rather than just the alignment of atoms. While atoms can be positioned in an orderly manner within a crystal lattice, this alone does not guarantee ferromagnetic behavior. The alignment of electron spins is the critical factor that contributes to the material's magnetism. Therefore, stating that "the atoms are aligned" is an oversimplification and can be misleading. Accurate terminology is crucial for understanding the underlying physics of ferromagnetic materials.
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Is it enough/correct to say "the atoms are aligned" in a ferromagnet, or must you specify that "the electrons (or their spin) are aligned"?
 
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sci-guy said:
Is it enough/correct to say "the atoms are aligned" in a ferromagnet, or must you specify that "the electrons (or their spin) are aligned"?

Look at the logic and physics of the statement. Atoms can be aligned and yet, it doesn't result in a ferromagnet material. That is what a crystal lattice is, a set of atoms in a regular patttern, thus "aligned" in terms of position. This means that there needs to be a more specific characteristic to cause ferromagnetism.

Zz.
 
Thanks, that's what I thought, except I read an explanation citing atom alignment -- guess he was speaking loosely.
 
Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

So here is the motional EMF formula. Now I understand the standard Faraday paradox that an axis symmetric field source (like a speaker motor ring magnet) has a magnetic field that is frame invariant under rotation around axis of symmetry. The field is static whether you rotate the magnet or not. So far so good. What puzzles me is this , there is a term average magnetic flux or "azimuthal mean" , this term describes the average magnetic field through the area swept by the rotating Faraday...
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