Abstract
A previous theoretical model of 3-magnon scattering is connected to experimentally measured characteristics, such as the damping constant α and the power threshold, through a realistic micromagnetic simulation. Both the critical magnon amplitude and relaxation rate are determined to be proportional to α which implies that the power threshold scales sensitively as α4. In addition, the scattered magnons are found to form two sets of symmetric wavevector k ≠ 0 magnon pairs, which are focused over a small range of angles and robust for a wide power range. Our results increase understanding of the model with respect to experimental and engineering aspects, and reduce the trial and error approach to application design.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 997-1002 |
| Number of pages | 6 |
| Journal | IEEE Journal of Microwaves |
| Volume | 1 |
| Issue number | 4 |
| DOIs | |
| State | Published - Oct 2021 |
Bibliographical note
Publisher Copyright:© 2022 IEEE Journal of Microwaves. All right reserved.
Keywords
- Magnetic films
- damping
- magnetostatic surface waves
- magnonics
- micromagnetics
- microwave magnetics
- nonlinear microwave absorption
- power threshold
- susceptibility