Rare Earth Magnets
Name: Robert M.
Why do rare earth magnets produce such a stronger field
than ordinary magnets?
Rare earth elements have f shell electrons. You might recall that an f shell
can accommodate 14 electrons. The f shells is filled initially with all spins
pointing in one direction, this is know as Hunds' rule. Having these
electrons align give rise to stronger magnetic fields.
Dr. Harold Myron
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Update: June 2012