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

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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.

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

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Publication details

The article was received on 21 Oct 2017, accepted on 23 Apr 2018 and first published on 17 May 2018


Article type: Paper
DOI: 10.1039/C7NR07843A
Citation: Nanoscale, 2018, Advance Article
  • Open access: Creative Commons BY license
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    Ultrafast magnetization dynamics in a nanoscale three-dimensional cobalt tetrapod structure

    S. Sahoo, S. Mondal, G. Williams, A. May, S. Ladak and A. Barman, Nanoscale, 2018, Advance Article , DOI: 10.1039/C7NR07843A

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