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Engineered Magnetization Dynamics of Magnonic Nanograting Filters
Name
magnetochemistry-07-00081.pdf
Size
1.92 MB
Format
Adobe PDF
Checksum (MD5)
e06b1334cbfef421c5326c6b26aeba6e
Author(s)
Yagan, Rawana
Katmis, Ferhat
Onbaşlı, Mehmet C.
Date Issued
June 3, 2021
Publisher
Multidisciplinary Digital Publishing Institute
Citation
Magnetochemistry 7 (6): 81 (2021)
Version
Final published version
Abstract
Magnonic crystals and gratings could enable tunable spin-wave filters, logic, and frequency multiplier devices. Using micromagnetic models, we investigate the effect of nanowire damping, excitation frequency and geometry on the spin wave modes, spatial and temporal transmission profiles for a finite patterned nanograting under external direct current (DC) and radio frequency (RF) magnetic fields. Studying the effect of Gilbert damping constant on the temporal and spectral responses shows that low-damping leads to longer mode propagation lengths due to low-loss and high-frequency excitations are also transmitted with high intensity. When the nanowire is excited with stronger external RF fields, higher frequency spin wave modes are transmitted with higher intensities. Changing the nanowire grating width, pitch and its number of periods helps shift the transmitted frequencies over super high-frequency (SHF) range, spans S, C, X, Ku, and K bands (3–30 GHz). Our design could enable spin-wave frequency multipliers, selective filtering, excitation, and suppression in magnetic nanowires.
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Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
http://dx.doi.org/10.3390/magnetochemistry7060081
