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

Sahoo, Sourav ; Mondal, Sucheta ; Williams, Gwilym ; May, Andrew ; Ladak, Sam ; Barman, Anjan (2018) Ultrafast magnetization dynamics in a nanoscale three-dimensional cobalt tetrapod structure Nanoscale, 10 (21). pp. 9981-9986. ISSN 2040-3364

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Official URL: http://doi.org/10.1039/C7NR07843A

Related URL: http://dx.doi.org/10.1039/C7NR07843A

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
Source:Copyright of this article belongs to Royal Society of Chemistry.
ID Code:116195
Deposited On:07 Apr 2021 10:27
Last Modified:07 Apr 2021 10:27

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