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

Sahoo, S, Mondal, S, Williams, G, May, A, Ladak, Sam and Barman, A 2018. Ultrafast magnetization dynamics in a Nanoscale three- dimensional cobalt tetrapod structure. Nanoscale 2018 (10) , 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
Publisher: Royal Society of Chemistry
ISSN: 2040-3364
Date of First Compliant Deposit: 2 May 2018
Date of Acceptance: 23 April 2018
Last Modified: 28 Apr 2019 12:32
URI: http://orca.cf.ac.uk/id/eprint/110905

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