J. Phys. IV France 07 (1997) C1-441-C1-442
Influence of the Magnetic Subdivision on the High Frequency Wave Propagation in Polycristalline Soft FerritesK. Berthou-Pichavant1, F. Liorzou2, Ph. Gelin1 and M. Le Floch2
1 LEST/ Télécom Bretagne, Technopôle de Brest Iroise, BP. 832, 29285 Brest cedex, France
2 LEST/UFR Sciences, 6 avenue Le Gorgeu, 29285 Brest cedex, France
In order to examine guided wave propagation in unsaturated ferrites, it seems reasonable to consider an alternation of layers with antiparallel magnetization in a rectangular waveguide. This approach is coherent with Schlömann's model which considers partially magnetized ferrites as an alternation of antiparallel coaxial cylinders. The state of magnetization will be changed by modifying the thickness of antiparallel layers. Globus model, that represents the partially magnetized material as a single grain subdivided into two domains with antiparallel magnetization, seems to be well adapted to express the "magnetization-field" relation.
© EDP Sciences 1997