Direct mapping of spin wave modes of individual Ni80Fe20 nanorings

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

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
• Public URL: https://durham-repository.worktribe.com/output/1273520