Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2008-12-24
J. Appl. Phys. 105, 083906 (2009)
Physics
Condensed Matter
Other Condensed Matter
Scientific paper
10.1063/1.3098258
One-dimensional magnonic crystals have been implemented as gratings of shallow grooves chemically etched into the surface of yttrium-iron garnet films. Scattering of backward volume magnetostatic spin waves from such structures is investigated experimentally and theoretically. Well-defined rejection frequency bands are observed in transmission characteristics of the magnonic crystals. The loss inserted by the gratings and the rejections bands bandwidths are studied as a function of the film thickness, the groove depth, the number of grooves, and the groove width. The experimental data are well described by a theoretical model based on the analogy of a spin-wave film-waveguide with a microwave transmission line. Our study shows that magnonic crystals with required operational characteristics can be engineered by adjusting these geometrical parameters.
Chumak Andrii V.
Hillebrands Burkard
Kostylev M. P.
Serga Alexander A.
Wolff Sandra
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