Nano-Torsional Resonator Torque Magnetometry

ORAL

Abstract

Torque magnetometry has been used for many years for a variety of magnetic measurements. Moving to nanoscale torsional resonators can push the limits of sensitivity for mechanical torque measurements. We report the use of magnetic torque to drive multiple torsion modes of nanoresonators that have been integrated with nanomagnetic elements. The interferometric response can be used to sensitively measure the magnetic behavior of single nanoscale magnetic objects with excellent sensitivity ($\approx 10^8 \mu_B$ for a single hysteresis curve).

*We acknowledge support from NSERC, iCORE, CIFAR, NINT, CRC, AIF, and the Integrated Nanosystems Research Facility supported through CFI and nanoAlberta.

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Authors

  • John Davis

    • University of Alberta

  • Doug Vick

    • National Institute for Nanotechnology

  • Dave Fortin

    • University of Alberta

  • Jacob Burgess

    • Department of Physics, University of Alberta
    • University of Alberta and National Institute for Nanotechnology

  • Wayne Hiebert

    • National Institute for Nanotechnology

  • Mark Freeman

    • University of Alberta and National Institute for Nanotechnology