Fabrication of scaffold-based 3D magnetic nanowires for domain wall applications

Dédalo Sanz-Hernández, Ruben F. Hamans, Johannes Osterrieth, Jung Wei Liao, Luka Skoric, Jason D. Fowlkes, Philip D. Rack, Anna Lippert, Steven F. Lee, Reinoud Lavrijsen, Amalio Fernández-Pacheco

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Uittreksel

Three-dimensional magnetic nanostructures hold great potential to revolutionize information technologies and to enable the study of novel physical phenomena. In this work, we describe a hybrid nanofabrication process combining bottom-up 3D nano-printing and top-down thin film deposition, which leads to the fabrication of complex magnetic nanostructures suitable for the study of new 3D magnetic effects. First, a non-magnetic 3D scaffold is nano-printed using Focused Electron Beam Induced Deposition; then a thin film magnetic material is thermally evaporated onto the scaffold, leading to a functional 3D magnetic nanostructure. Scaffold geometries are extended beyond recently developed single-segment geometries by introducing a dual-pitch patterning strategy. Additionally, by tilting the substrate during growth, low-angle segments can be patterned, circumventing a major limitation of this nano-printing process; this is demonstrated by the fabrication of ‘staircase’ nanostructures with segments parallel to the substrate. The suitability of nano-printed scaffolds to support thermally evaporated thin films is discussed, outlining the importance of including supporting pillars to prevent deformation during the evaporation process. Employing this set of methods, a set of nanostructures tailored to precisely match a dark-field magneto-optical magnetometer have been fabricated and characterized. This work demonstrates the versatility of this hybrid technique and the interesting magnetic properties of the nanostructures produced, opening a promising route for the development of new 3D devices for applications and fundamental studies.

Originele taal-2Engels
Artikelnummer483
Aantal pagina's12
TijdschriftNanomaterials
Volume8
Nummer van het tijdschrift7
DOI's
StatusGepubliceerd - 1 jul 2018

Vingerafdruk

Domain walls
Scaffolds
Nanowires
Nanostructures
Fabrication
Printing
Magnetic thin films
Thin films
Geometry
Magnetometers
Substrates
Nanotechnology
Information technology
Electron beams
Magnetic properties
Evaporation

Citeer dit

Sanz-Hernández, D., Hamans, R. F., Osterrieth, J., Liao, J. W., Skoric, L., Fowlkes, J. D., ... Fernández-Pacheco, A. (2018). Fabrication of scaffold-based 3D magnetic nanowires for domain wall applications. Nanomaterials, 8(7), [483]. https://doi.org/10.3390/nano8070483
Sanz-Hernández, Dédalo ; Hamans, Ruben F. ; Osterrieth, Johannes ; Liao, Jung Wei ; Skoric, Luka ; Fowlkes, Jason D. ; Rack, Philip D. ; Lippert, Anna ; Lee, Steven F. ; Lavrijsen, Reinoud ; Fernández-Pacheco, Amalio. / Fabrication of scaffold-based 3D magnetic nanowires for domain wall applications. In: Nanomaterials. 2018 ; Vol. 8, Nr. 7.
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abstract = "Three-dimensional magnetic nanostructures hold great potential to revolutionize information technologies and to enable the study of novel physical phenomena. In this work, we describe a hybrid nanofabrication process combining bottom-up 3D nano-printing and top-down thin film deposition, which leads to the fabrication of complex magnetic nanostructures suitable for the study of new 3D magnetic effects. First, a non-magnetic 3D scaffold is nano-printed using Focused Electron Beam Induced Deposition; then a thin film magnetic material is thermally evaporated onto the scaffold, leading to a functional 3D magnetic nanostructure. Scaffold geometries are extended beyond recently developed single-segment geometries by introducing a dual-pitch patterning strategy. Additionally, by tilting the substrate during growth, low-angle segments can be patterned, circumventing a major limitation of this nano-printing process; this is demonstrated by the fabrication of ‘staircase’ nanostructures with segments parallel to the substrate. The suitability of nano-printed scaffolds to support thermally evaporated thin films is discussed, outlining the importance of including supporting pillars to prevent deformation during the evaporation process. Employing this set of methods, a set of nanostructures tailored to precisely match a dark-field magneto-optical magnetometer have been fabricated and characterized. This work demonstrates the versatility of this hybrid technique and the interesting magnetic properties of the nanostructures produced, opening a promising route for the development of new 3D devices for applications and fundamental studies.",
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Sanz-Hernández, D, Hamans, RF, Osterrieth, J, Liao, JW, Skoric, L, Fowlkes, JD, Rack, PD, Lippert, A, Lee, SF, Lavrijsen, R & Fernández-Pacheco, A 2018, 'Fabrication of scaffold-based 3D magnetic nanowires for domain wall applications', Nanomaterials, vol. 8, nr. 7, 483. https://doi.org/10.3390/nano8070483

Fabrication of scaffold-based 3D magnetic nanowires for domain wall applications. / Sanz-Hernández, Dédalo; Hamans, Ruben F.; Osterrieth, Johannes; Liao, Jung Wei; Skoric, Luka; Fowlkes, Jason D.; Rack, Philip D.; Lippert, Anna; Lee, Steven F.; Lavrijsen, Reinoud; Fernández-Pacheco, Amalio.

In: Nanomaterials, Vol. 8, Nr. 7, 483, 01.07.2018.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

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AU - Sanz-Hernández, Dédalo

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AU - Osterrieth, Johannes

AU - Liao, Jung Wei

AU - Skoric, Luka

AU - Fowlkes, Jason D.

AU - Rack, Philip D.

AU - Lippert, Anna

AU - Lee, Steven F.

AU - Lavrijsen, Reinoud

AU - Fernández-Pacheco, Amalio

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N2 - Three-dimensional magnetic nanostructures hold great potential to revolutionize information technologies and to enable the study of novel physical phenomena. In this work, we describe a hybrid nanofabrication process combining bottom-up 3D nano-printing and top-down thin film deposition, which leads to the fabrication of complex magnetic nanostructures suitable for the study of new 3D magnetic effects. First, a non-magnetic 3D scaffold is nano-printed using Focused Electron Beam Induced Deposition; then a thin film magnetic material is thermally evaporated onto the scaffold, leading to a functional 3D magnetic nanostructure. Scaffold geometries are extended beyond recently developed single-segment geometries by introducing a dual-pitch patterning strategy. Additionally, by tilting the substrate during growth, low-angle segments can be patterned, circumventing a major limitation of this nano-printing process; this is demonstrated by the fabrication of ‘staircase’ nanostructures with segments parallel to the substrate. The suitability of nano-printed scaffolds to support thermally evaporated thin films is discussed, outlining the importance of including supporting pillars to prevent deformation during the evaporation process. Employing this set of methods, a set of nanostructures tailored to precisely match a dark-field magneto-optical magnetometer have been fabricated and characterized. This work demonstrates the versatility of this hybrid technique and the interesting magnetic properties of the nanostructures produced, opening a promising route for the development of new 3D devices for applications and fundamental studies.

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KW - Direct write

KW - FEBID

KW - Focused electron beam induced deposition

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KW - Nanomagnetism

KW - Nanowire

KW - Thin film

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Sanz-Hernández D, Hamans RF, Osterrieth J, Liao JW, Skoric L, Fowlkes JD et al. Fabrication of scaffold-based 3D magnetic nanowires for domain wall applications. Nanomaterials. 2018 jul 1;8(7). 483. https://doi.org/10.3390/nano8070483