Abstract
This paper considers and theoretically investigates the process of electromagnetic waves propagation in the ferrimagnetic materials, which are magnetized by a constant magnetic field. The physical effects occurring in the cases of linear and circular polarizations of propagating electromagnetic waves are considered. The expressions of Polder tensor of magnetic permeability have been derived and analyzed. In addition, typical frequency dependences of Polder tensor components were illustrated in the research. Nonreciprocal and resonance physical phenomena occuring in magnetized ferrimagnetic materials are described in the paper. The types and operating principles of nonreciprocal microwave waveguide devices based on the magnetized ferrimagnetic materials are presented. General scattering matrices of microwave isolators and circulators are given for the case of their perfect operation. Several examples of microwave systems including nonreciprocal devices are considered in the paper.
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