Dynamic excitation of 2 vortex in a hard/soft bilayer nanodot

DOI

10.2991/icmmita-16.2016.79How to use a DOI?

Keywords

vortex; nanodot; magnetic dynamic; microwave frequency.

Abstract

The dynamic behaviors of 2 vortex in nanodot driven by microwave magnetic elds is investigated by micromagnetic simulations. The spin dynamics are analyzed by extracting the magnetic excitation spectrum from Fourier transform. Four resonance peaks are observed. Domain-wall resonance mode has been identified at the domain wall in the lowest frequency of the spectrum and a set of high-frequency spin wave excitations above 4.83 GHz. The resonant mechanism and associated underlying physics are completely different from those of vortex core with rotational mode. These results distinguish a 2 vortex from other spin-texture objects in dynamics and will be instrumental to the excitation of vortex for applications.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Mei Bi
AU  - Xin Wang
AU  - Li Zhang
AU  - Haipeng Lu
AU  - Longjiang Deng
PY  - 2017/01
DA  - 2017/01
TI  - Dynamic excitation of 2 vortex in a hard/soft bilayer nanodot
BT  - Proceedings of the 2016 4th International Conference on Machinery, Materials and Information Technology Applications
PB  - Atlantis Press
SP  - 434
EP  - 437
SN  - 2352-538X
UR  - https://doi.org/10.2991/icmmita-16.2016.79
DO  - 10.2991/icmmita-16.2016.79
ID  - Bi2017/01
ER  -