Ultrafast magnetization dynamics in a nanoscale three- dimensional cobalt tetrapod structure

Sahoo, Sourav, Mondal, Sucheta, Williams, Gwilym, May, Andrew, Ladak, Sam ORCID: https://orcid.org/0000-0002-0275-0927 and Barman, Anjan 2018. Ultrafast magnetization dynamics in a nanoscale three- dimensional cobalt tetrapod structure. Nanoscale 10 (21) , pp. 9981-9986. 10.1039/C7NR07843A

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Abstract

Three-dimensional magnetic nanostructures are now attracting intense interest due to their potential as ultrahigh density future magnetic storage devices. Here, we report on the study of ultrafast magnetization dynamics of a complex three-dimensional magnetic nanostructure. Arrays of magnetic tetrapod structures were fabricated using a combination of two-photon lithography (TPL) and electrodeposition. All-optical time-resolved magneto-optical Kerr microscopy was exploited to probe the spin-wave modes from the junction of a single tetrapod structure. Micromagnetic simulations reveal that the nature of these modes originates from the intricate three-dimensional tetrapod structure. Our findings enhance the basic knowledge about the dynamic control of spin waves in complex three-dimensional magnetic elements which are imperative for the construction of modern spintronic devices.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Additional Information:	This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Publisher:	Royal Society of Chemistry
ISSN:	2040-3364
Date of First Compliant Deposit:	2 May 2018
Date of Acceptance:	23 April 2018
Last Modified:	05 May 2023 01:06
URI:	https://orca.cardiff.ac.uk/id/eprint/110905

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