Microwaves In Gyromagnetic Waveguides

Properties of transverse electric waves in the microwave frequency range on a plane interface between a nonlinear antiferromagnet and a linear ferromagnet are investigated. It is revealed that there are two different field distributions and powers. An exact analytical dispersion relation is obtained. On the basis of the dispersion relation, we have investigated the properties of surface waves in this waveguide and, theoretically, found that there exist passbands and stop bands, which can be controlled by varying the power in the nonlinear gyromagnetic waveguides. (C) 2001 American Institute of Physics.