Abstract
This chapter deals with the properties of antiferromagnetic and ferrimagnetic solids. The two-sublattice model has been used to estimate the magnetic susceptibility and the Neel temperature for antiferromagnetic solids. The magnetic susceptibility shows Curie type behavior above the Neel temperature and the relation between the Neel temperature and the molecular field constants has been derived. Below the Neel temperature it has two contributions depending on the direction of the magnetic field with respect to the direction of the spins. The two-sublattice model applied to ferrimagnetic solids shows that the magnetic susceptibility follows Curie-type behavior. The general spin wave theory in antiferromagnetism has been formulated and applied to evaluate the magnon dispersion relations in simple structures. The magnon dispersion relations in antiferromagnetic solids are different from those found in ferromagnetic solids.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
