Investigation of the magnetic properties of the samples reveals superparamagnetic behaviour and high magnetization. These properties are easily controllable through the synthesis parameters (implantation concentration, depth, annealing temperature, and duration). The remarkable properties of such a material have real potential to be used as a core for a small fluxgate magnetometer. In addition, having an insulator, air or silica, separating highly spin polarized nano magnetic nanoparticles means that they can be used as magnetoresistance magnetic field sensors.

The Ion Beam Analysis and New Materials team at GNS Science, New Zealand, is developing new materials using ion implantation, electron beam and arc discharge methods. The group is studying the mechanism underlying the synthesis of the materials, as well as investigating the properties and potential uses across a wide range of applications from gas sensor to magnetic devices.

More details can be found in the journal Nanotechnology.