Description:
AbstractThe magnetic properties of orthorhombic weak ferromagnetics are investigated by the double‐time Green function method in the Heisenberg model. To solve this problem the method of successive approximations suggested in [1] is used. The magnetization curves of the single domain orthorhombic weak ferromagnetics for non‐zero temperature and the frequencies of antiferromagnetic resonance (AFMR) in two sublattice models at 0 °K are calculated. The way of the calculation of the temperature dependence of thermodynamic parameters and AFMR frequencies is outlined.