Abstract
An extremely flat transmission band for a forward volume spin wave (SW) propagating in an SW waveguide composed of yttrium iron garnet film and SW absorbers was obtained, using the finite integration technique. Three-dimensional analysis of the calculated results showed that the transmission ripples of the SWs propagating in the waveguide were caused by SW interference, especially that due to two standing waves originating from the waveguide edge-edge and the waveguide-antenna edge. To suppress these waves, SW absorbers composed of gold film were introduced and the resultant positions and shapes were investigated precisely. Hence, an extremely flat transmission band was obtained. The results of this study have potential application in the development of one- and two-dimensional magnonic crystals for integrated SW devices.
| Original language | English |
|---|---|
| Article number | 275001 |
| Journal | Journal of Physics D: Applied Physics |
| Volume | 50 |
| Issue number | 27 |
| DOIs | |
| Publication status | Published - 2017 Jun 15 |
| Externally published | Yes |
Keywords
- forward volume spin wave
- magnetostatic wave
- spin wave attenuator
- transmission band
- yttrium iron garnet
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Acoustics and Ultrasonics
- Surfaces, Coatings and Films