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- Title
Spectrum of the Ferromagnetic Resonance of a Lattice of Orthogonal Permalloy Microwaveguides.
- Authors
Vysotskii, S. L.; Dudko, G. M.; Dzhumaliev, A. S.; Kozhevnikov, A. V.; Nikulin, Yu. V.; Sakharov, V. K.; Khivintsev, Yu. V.; Filimonov, Yu. A.; Khitun, A. G.; Nikitov, S. A.
- Abstract
The ferromagnetic resonance spectrum at a frequency of ~9.85 GHz for an in-plane magnetized 2D square lattice with the unit cell parameter а ≈ 15 μm consisting of orthogonal microwaveguides with a width of w ≈ 5 μm on the basis of a permalloy film with thickness of d ≈ 90 nm has been experimentally and numerically investigated. It is shown that upon variation in the angle θ between the magnetic field direction and the unit cell axis, the total spectrum of spin-wave excitations of the lattice can be presented as a superposition of the spectra of separate permalloy microstrips magnetized at angles θ and π/2-θ and regions corresponding to the lattice nodes. It has been found that, in the case of magnetization along the lattice diagonal (θ ≈ 45о), excitations localized at the lattice nodes dominate in the spectrum, whereas, at θ ≈ 0 and 90°, the main contribution is made by excitations localized mainly on the microwaveguide segments between the lattice nodes; at θ ≈ 10°-13° and 18-20°, “repulsion” of absorption lines in the spectrum is observed.
- Subjects
IRON-nickel alloys; FERROMAGNETIC resonance; CRYSTAL lattices; OPTICAL waveguides; WAVEGUIDES
- Publication
Journal of Communications Technology & Electronics, 2018, Vol 63, Issue 9, p1047
- ISSN
1064-2269
- Publication type
Article
- DOI
10.1134/S1064226918090255