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Two-photon lithography for 3D magnetic nanostructure fabrication

  • Gwilym I. Williams
  • , Matthew Hunt
  • , Benedikt Boehm
  • , Andrew May
  • , Mike Taverne
  • , Daniel Ho
  • , Sean Giblin
  • , Dan Read
  • , John Rarity
  • , Rolf Allenspach
  • , Sam Ladak*
    • *Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

129 Citations (Scopus)
498 Downloads (Pure)

Abstract

Ferromagnetic materials have been utilized as recording media in data storage devices for many decades. The confinement of a material to a two-dimensional plane is a significant bottleneck in achieving ultra-high recording densities, and this has led to the proposition of three-dimensional (3D) racetrack memories that utilize domain wall propagation along the nanowires. However, the fabrication of 3D magnetic nanostructures of complex geometries is highly challenging and is not easily achieved with standard lithography techniques. Here, we demonstrate a new approach to construct 3D magnetic nanostructures of complex geometries using a combination of two-photon lithography and electrochemical deposition. The magnetic properties are found to be intimately related to the 3D geometry of the structure, and magnetic imaging experiments provide evidence of domain wall pinning at the 3D nanostructured junction.

Original languageEnglish
Pages (from-to)845-854
Number of pages10
JournalNano Research
Volume11
Issue number2
Early online date12 Jul 2017
DOIs
Publication statusPublished - 1 Feb 2018

Research Groups and Themes

  • Bristol Quantum Information Institute
  • QETLabs
  • Photonics and Quantum

Keywords

  • Magnetism
  • Nanomagnetism
  • Spintronics
  • Three-dimensional (3D) lithography

Access to Document

  • Full-text PDF (final published version)

    This is the final published version of the article (version of record). It first appeared online via Springer at https://link.springer.com/article/10.1007%2Fs12274-017-1694-0. Please refer to any applicable terms of use of the publisher.

    Final published version, 1.65 MBLicence: CC BY
  • Supplementary information PDF

    This is the final published version of the article (version of record). It first appeared online via Springer at https://link.springer.com/article/10.1007%2Fs12274-017-1694-0. Please refer to any applicable terms of use of the publisher.

    Final published version, 606 KBLicence: CC BY

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    • Chalcogenide Photonic Technologies

      Rarity, J. G. (Principal Investigator)

      1/05/15 → 30/04/18

      Project: Research

    • Two level systems for scalable quantum processors

      Rarity, J. G. (Principal Investigator)

      1/04/15 → 31/03/20

      Project: Research

    • Programme Grant: Engineering Photonic Quantum Technologies.

      Rarity, J. G. (Principal Investigator), O'Brien, J. L. (Principal Investigator), Thompson, M. G. (Co-Investigator), Erven, C. (Co-Investigator), Sahin, D. (Co-Investigator), Marshall, G. D. (Researcher), Barreto, J. (Co-Investigator), Jiang, P. (Collaborator), McCutcheon, W. D. (Researcher), Silverstone, J. W. (Researcher), Sinclair, G. F. (Researcher), Kling, L. (Engineer), Banerjee, A. (Researcher), Wang, J. (Researcher), Santagati, R. (Researcher), Borghi, M. (Researcher), Woodland, E. M. (Manager), Mawdsley, H. C. M. (Administrator) & Faruque, I. I. (Researcher)

      16/06/14 → 15/06/19

      Project: Research, Parent

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