qvas

The Barnett Effect! That is the effect that I've been trying to remember for weeks now!! Basically if you have a rotating body of spins, the spins will be polarized due to the rotation -- hence by spinning a sample you get a magnetization that is parallel to the axis of the spin. I've heard about this effect only in the context of nuclear spins, but I assume the same effect is true in that of electron spins. The first experiments demontrating the Barnett effect were simply rotating an iron rod (ferromagnet) and thus magnetizing it. The opposite was attempted as well -- getting rotation from magnitization. I'm curious... what is the order of magnitude of rotation required to spin polarize electron and nuclear spins? Also, what would the order of magnitude magnetization be as a result?