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Magnetization dynamics of single and trilayer permalloy nanodotsPublished in American Institute of Physics Inc.
2021
DOI: 10.1063/5.0060689
Volume: 130
Issue: 8
We have investigated the magnetization dynamics in single and trilayer circular permalloy nanodots with a diameter of 120 nm using broadband ferromagnetic resonance spectroscopy. For single-layer nanodots, two well-separated modes near the saturation field, a high-frequency center mode due to excitations at the center of the nanodots and a low-frequency edge mode due to the inhomogeneous effective field near the edges, were observed. Both the center mode and the edge mode are found to be sensitive to the thickness of the nanodots. However, for trilayer nanodots, two center modes arise due to the in-phase and out-of-phase precession of spins in magneto-dynamically coupled layers. Our experimental results are substantiated by micromagnetic simulations, which are in good agreement. © 2021 Author(s).
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Content may be subject to copyright.This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publ... ...This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in [Magnetization dynamics of single and trilayer permalloy nanodots. Journal of Applied Physics 130, 8 p083906 (2021)] and may be found at https://doi.org/10.1063/5.0060689.
About the journal
| Journal | Journal of Applied Physics |
|---|---|
| Publisher | American Institute of Physics Inc. |
| ISSN | 00218979 |
Authors (1)
Arabinda Haldar- Giant spin pumping at the ferromagnet (permalloy)-organic semiconductor (perylene diimide) interface
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