Fabrication of a 3D nanomagnetic circuit with multi-layered materials for applications in spintronics

Meng, F., Donnelly, C., Skoric, L., Hierro-Rodriguez, A., Liao, J.-w. and Fernández-Pacheco, A. (2021) Fabrication of a 3D nanomagnetic circuit with multi-layered materials for applications in spintronics. Micromachines, 12(8), 859. (doi: 10.3390/mi12080859)

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Three-dimensional (3D) spintronic devices are attracting significant research interest due to their potential for both fundamental studies and computing applications. However, their implementations face great challenges regarding not only the fabrication of 3D nanomagnets with high quality materials, but also their integration into 2D microelectronic circuits. In this study, we developed a new fabrication process to facilitate the efficient integration of both non-planar 3D geometries and high-quality multi-layered magnetic materials to prototype 3D spintronic devices, as a first step to investigate new physical effects in such systems. Specifically, we exploited 3D nanoprinting, physical vapour deposition and lithographic techniques to realise a 3D nanomagnetic circuit based on a nanobridge geometry, coated with high quality Ta/CoFeB/Ta layers. The successful establishment of this 3D circuit was verified through magnetotransport measurements in combination with micromagnetic simulations and finite element modelling. This fabrication process provides new capabilities for the realisation of a greater variety of 3D nanomagnetic circuits, which will facilitate the understanding and exploitation of 3D spintronic systems.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Hierro Rodriguez, Dr Aurelio and Fernandez-Pacheco, Dr Amalio
Creator Roles:
Hierro-Rodriguez, A.Methodology, Writing – review and editing
Fernández-Pacheco, A.Conceptualization, Funding acquisition, Methodology, Project administration, Supervision, Writing – review and editing
Authors: Meng, F., Donnelly, C., Skoric, L., Hierro-Rodriguez, A., Liao, J.-w., and Fernández-Pacheco, A.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Micromachines
ISSN (Online):2072-666X
Published Online:22 July 2021
Copyright Holders:Copyright © 2021 The Authors
First Published:First published in Micromachines 12(8): 859
Publisher Policy:Reproduced under a Creative Commons License
Data DOI:10.17863/CAM.71024

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
306323Writing nanomagnets: Investigation of new magnetic nanostructures fabricated byAmalio Fernandez-PachecoEngineering and Physical Sciences Research Council (EPSRC)EP/M008517/2P&S - Physics & Astronomy
302023Perpendicular Magnetic Anisotropy: from Topological Defects to Reconfigurable Magnetic DevicesStephen McVitieEuropean Commission (EC)746958P&S - Physics & Astronomy