Study of dipolar interaction between nano-disks

ORAL

Abstract

Ferromagnetic nano-dot arrays are interesting for data storage applications, but as the density of disks becomes high the dipolar interactions between disks become strong. In this work we study lithographically prepared arrays of densely packed single domain perm-alloy nano-disks where the dipolar correlations are significant. We study the collective magnetic array properties for different array geometries and varying disk separation and explore the effect of magnetic frustration in these systems.

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Authors

  • Megha Chadha

    Imperial College London, Blackett Laboratory, Imperial College, Prince Consort Road, London SW7 2AZ, UK; London Centre for Nanotechnology, London WC1H 0AH, UK, Imperial College London, UK; London Center for Nanotechnology, UK

  • Stephanie K. Walton

    Imperial College London, Blackett Laboratory, Imperial College, Prince Consort Road, London SW7 2AZ, UK; London Centre for Nanotechnology, London WC1H 0AH, UK, Imperial College London, UK; London Center for Nanotechnology, UK

  • Katharina Zeissler

    Imperial College London, Blackett Laboratory, Imperial College, Prince Consort Road, London SW7 2AZ, UK; London Centre for Nanotechnology, London WC1H 0AH, UK, Imperial College London, UK; London Center for Nanotechnology, UK

  • David M. Burn

    Blackett Laboratory, Imperial College, Prince Consort Road, London SW7 2AZ, UK; London Centre for Nanotechnology, London WC1H 0AH, UK, Imperial College London, UK; London Center for Nanotechnology, UK

  • Solveig Felton

    Department of Physics and Astronomy, Queen's University, Belfast BT7 1NN, United Kingdom

  • Lesley Cohen

    Imperial College London, Blackett Laboratory, Imperial College, Prince Consort Road, London SW7 2AZ, UK; London Centre for Nanotechnology, London WC1H 0AH, UK, Imperial College London, UK; London Center for Nanotechnology, UK

  • Will R. Branford

    Imperial College London, Blackett Laboratory, Imperial College, Prince Consort Road, London SW7 2AZ, UK; London Centre for Nanotechnology, London WC1H 0AH, UK, Department of Physics, Blackett Laboratory, Imperial College London, London SW72AZ, UK and London Centre for Nanotechnology, Imperial College London, UK; London Center for Nanotechnology, UK