Acoustically Driven Ferromagnetic Resonance
We are inves
tigating ferromagnetic resonance phenomena in composite multiferroic systems for uses in both device applications as well as for use as a flexible characterization technique for multiferroic and magnetoelastic materials. In these systems we induce a surface acoustic wave (SAW) in a piezoelectric substrate and then couple this time-varying strain into a magnetostrictive ferromagnet to drive it into resonance.
The attenuation of the SAW provides us with a quantitative measurement of the strength of the interaction. Recent work has allowed us to perform a quantitative analysis of this effect and to verify its potential for scalable, low-power integration.