1. Experimental observation of surface modes along two parallel‐axially magnetized ferrite rods
- Author
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Shizuo Mizushina and Toshimi Meiri
- Subjects
Materials science ,Condensed matter physics ,business.industry ,Yttrium iron garnet ,General Physics and Astronomy ,Resonance ,Rod ,Magnetic field ,Standing wave ,Magnetization ,chemistry.chemical_compound ,Optics ,chemistry ,Ferrite (magnet) ,Axial symmetry ,business - Abstract
Two pairs of resonance absorptions due to the lowest‐order even 1e and odd 1o surface modes along two axially magnetized polycrystalline yttrium iron garnet YIG rods of several lengths from 3 to 25 mm have been observed in an experiment where the ferrite rods were placed in a TE10 rectangular waveguide and in a cavity coupled with a current loop. One pair is 10e and 10o resonances whose magnetization in each rod precesses in phase over the rod length. The other pair is 11e and 11o resonances due to the half‐wavelength standing waves along the rods. The experimental results are compared with theory. Results of a rudimentary experiment on a magnetically variable directional coupler using these modes are also presented.
- Published
- 1981
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