Red copper wire wound around a black ferrite core.

Magnetic composites

We're developing durable magnetic compounds to enable on-road charging of electric vehicles and other applications of inductive power transfer technology.

The science

We are working with partners at GNS Science and the University of Auckland to develop flux-guiding materials that have high permeability and will also withstand impact.

Mixing different soft magnetic compounds with organic or polymer resin makes them more flexible and formable. Such materials would have the capability to effectively guide magnetic fields for inductive power transfer and magnetic field sensing in a range of applications.

The use of natural magnetic materials and magnetic nanoparticles in our research is what makes it stand out. We can also exploit the magnetic anisotropy found in most magnetic materials through thin film fabrication and alignment of magnetic nanofibres to enhance their flux-guiding properties.

Impact and potential

Being able to withstand impact and guide magnetic flux is of practical importance in the development of charging pads for electric vehicles. With our partners, we are developing in-road pads that can charge vehicles moving on motorways. These materials could also be used for pads for static charging of electric vehicles.

Capabilities

  • Expertise in characterising the functional properties of nanoparticles
  • Furnaces that can reach as high as 1700°C and mixed reactant gases
  • Hydraulic presses and moulds to prepare soft magnetic composites
  • A high-pressure probe for optical and resistivity measurements at cryogenic temperatures
  • Materials mechanical testing facilities (Tinius Olsen H10KT)
  • Training and consultation

The people

Senior scientist Dr Shen Chong has published work on both superconductivity and magnetism. He has expertise in the characterisation of functional properties of nanomaterials, as well as in conducting magnetic sensor validation studies.

Senior Scientist

Robinson Research Institute