Direct mapping of spin wave modes of individual Ni80Fe20 nanorings

Tian, Chang; Chaudhuri, Ushnish; Singh, Navab; Adeyeye, Adekunle O

doi:10.1088/1361-6528/ab662f

Direct mapping of spin wave modes of individual Ni80Fe20 nanorings

Tian, Chang; Chaudhuri, Ushnish; Singh, Navab; Adeyeye, Adekunle O

Authors

Chang Tian

Ushnish Chaudhuri

Navab Singh

Professor Adekunle Adeyeye adekunle.o.adeyeye@durham.ac.uk
Head of College

Abstract

Ferromagnetic nanorings exhibit tunable magnetic states with unique magnetization reversal processes and dynamic behavior that can be exploited in data storage and magnonic devices. Traditionally, probing the magnetization dynamics of individual ferromagnetic nanorings and mapping the resonance modes has proved challenging. In this study, micro-focused Brillouin light scattering spectroscopy is used to directly map the spin wave modes and their intensities in nanorings as a function of ring width and applied magnetic field. Micromagnetic simulations provide further insights into the experimental observations and are in good agreement with the experimental results. These results can help in improving the understanding of spin wave confinement in single elements for magnonic devices and waveguides.

Citation

Tian, C., Chaudhuri, U., Singh, N., & Adeyeye, A. O. (2020). Direct mapping of spin wave modes of individual Ni80Fe20 nanorings. Nanotechnology, 31(14), Article 145714. https://doi.org/10.1088/1361-6528/ab662f

Journal Article Type	Article
Acceptance Date	Dec 30, 2019
Online Publication Date	Jan 17, 2020
Publication Date	Apr 3, 2020
Deposit Date	Apr 2, 2020
Publicly Available Date	Jan 17, 2021
Journal	Nanotechnology
Print ISSN	0957-4484
Electronic ISSN	1361-6528
Publisher	IOP Publishing
Peer Reviewed	Peer Reviewed
Volume	31
Issue	14
Article Number	145714
DOI	https://doi.org/10.1088/1361-6528/ab662f