3. Conclusion

Since the article's main didactic aim is to explain the phenomena of radio wave propagation encountered in anisotropic magnetic media, this objective deprives the conclusion of open perspectives on industrial applications.

Given this background, it seemed more rational to focus on a synthesis effort in which certain physical properties common to non-reciprocal quadrupoles containing a ferrite polarized under a static magnetic field were highlighted. Indeed, it was shown in the course of the article that the anisotropy of ferrites is mainly dependent on the coefficient ±jκ occupying the extradiagonal positions in the Polder tensor.

On the other hand, the realization of non-reciprocal quadrupoles has also shown that the natural properties of ferrite, characterized by gyromagnetic absorption, must be supplemented by artifices creating certain...