National Physical Laboratory

Nanomagnetism Nanomagnetism

A range of experimental techniques for measurements and visualisation
of small magnetic fields/moments.


We have developed a range of experimental techniques for measurements and visualisation of small magnetic fields/moments. Projects include:

Domain wall-based magnetic sensors thumbnail [100x74]   Domain wall-based magnetic sensors
Novel Hall sensors made of epitaxial graphene thumbnail [100x74]   Novel Hall sensors made of epitaxial graphene
Spin-Caloritronics thumbnail [100x74]   Spin-Caloritronics
Hybrid ferromagnetic - superconducting spintronics thumbnail [100x74]   Hybrid ferromagnetic - superconducting spintronics
Magnetic scanning probe calibration using graphene Hall sensors thumbnail [100x74]   Magnetic scanning probe calibration using graphene Hall sensors
Ultra small Hall sensors thumbnail [100x74]   Ultra small Hall sensors with improved sensitivity allowing room-temperature detection of a magnetic bead with size of 120 nm and moment of ~107 µB
nano-SQUIDs allowing us to detect a magnetic particle thumbnail [100x74]   nano-SQUIDs allowing us to detect a magnetic particle with the moment down to 104 µB at 8K
Standardization of MNP applications thumbnail [100x74]   Standardization of MNP applications


See Quantum Detection Publications for the full list of papers.

People working on these projects

External collaborators

Recent publications

Invited, keynote and international presentations

2016

  • 13th Joint Intermag-MMM conference, San Diego, CA, January 2016
    • Talk: Detection of a magnetic bead by hybrid nanodevices using scanning gate microscopy
    • Talk: MFM with controllable state of magnetic probes
    • Talk: Manipulation of the ferromagnetic proximity effect using controllable magnetic source
    • Poster (Best Poster award): Detection of magnetization reversal and domain wall position by anomalous Nernst effect measurements

2015

  • 20th International Conference on Magnetism (ICM 2015), Barcelona, Spain, July 2015
    • Talk: Scanning gate microscopy of domain wall nanosensor
    • Talk: Domain Wall Nanosensors Based on Ultra-thin CoFeB Films
  • EMN 2015, San Sebastian, Spain, September 2015
    Invited talk: Novel graphene-based nanosensors
  • ANMM 2015, Iasi, Romania, September 2015
    Invited talk: Domain-wall based magnetic nanosensors

2014

  • MMM 2014, Honolulu, HA, November 2014
    • Talk: Magnetic bead detection using domain wall-based nanosensor
    • Talk: Vortex-related AMR effect in sub-micron nickel disks
  • EMSA, Vienna, Austria, July 2014
    Talk:Influence of Geometry on Domain Wall Dynamics in Nanodevices
  • ICSM, Antalya, Turkey, April-May 2014
    Talk: Spin polarised quasi-particle current induced in hybrid superconducting - ferromagnetic nanostructures
  • IEEE International Magnetics Conference (INTERMAG 2014), Dresden, Germany, May 2014
    Talk: Tailoring of domain wall devices for sensing applications

Useful links

Image gallery

  • MFM image of Ni heat pads used in ferromagnet/superconductor junctions
     
  • Bonded magnetic sensor
     
  • Magnetic bead on an L-shape domain wall sensor
     
  • Magnetic sphere attached to an SPM probe
     
  • Large array of iron oxide nanoparticles on a silicon substrate
     
  • NdFeB spherical beads
     
  • Stripe domains in an array of Ni elements
     
  • NdFeB micromagnets: variety of sizes and shapes
     

Nanomagnetism team

 

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