Controlling acoustic metamaterials

We are working in collaboration with the University of Exeter to combine Surface Acoustic Waves (SAWs) with Ferromagnetic Resonance (FMR) to create acoustic metamaterials.

Surface acoustic wave devices have been extensively utilised in modern technology, being used as filters, sensors and for signal processing. Recently, the field of magnetism has extended to integrate acoustic waves and magnetic materials.

Here at Sheffield, we are focusing on creating these acoustic metamaterial devices and characterising the magnetic properties. Devices are fabricated through electron beam lithography, sputtering and evaporation, and characterised using Magneto-Optical Kerr Effect (MOKE) magnetometry and VNA-FMR. 

This work is supported by EPSRC through grant EP/T018399/1.