- #1
cronnin
- 16
- 0
Theory explains magnetism in iron as a combined effect of magnetic moments of electrons. Now, what is confusing me is that valence electrons in iron are supposed to be free. The valence band and conduction band overlap. So, what kind of orbital and spin-ular momentum do these free electrons actually have? I may also ask, what does it mean to be free? When the current flows through the iron plate, do these electrons leave their atoms and wander around, settling with another nucleus?