期刊
JOURNAL OF APPLIED PHYSICS
卷 105, 期 8, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3098258
关键词
etching; ferrites; garnets; magnetic structure; magnetic thin films; magnons; optimisation; spin waves; surface magnetism; transmission lines; yttrium compounds
资金
- DFG [SE 1771/1-1]
- Australian Research Council
- University of Western Australia
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 rejection band 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.
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