1. The problem statement, all variables and given/known data When we speak about Larmor precession we refer to atomic magnetic moments precessing in a magnetic field. In ordered magnets, such as ferromagnets, I never hear about larmor precession anymore. Are the magnetic moments frozen due to interactions with the surrounding crystal fields? Or all the moments precessing in the same direction? This isn't a homework question, just one I was thinking about and unable to find a good answer for.