Switching of Magnetic Moments of Nanoparticles by Surface Acoustic Waves

Abstract

We report evidence of the magnetization reversal in nanoparticles by surface acoustic waves (SAWs). The experimental system consists of isolated magnetite nanoparticles dispersed on a piezoelectric substrate. Magnetic relaxation from a saturated state becomes significantly enhanced in the presence of the SAW at a constant temperature of the substrate. The dependence of the relaxation on SAW power and frequency has been investigated. The effect is explained by the effective ac magnetic field generated by the SAW in the nanoparticles.

Accepted in Europhysics Letters

References in corpus (2)

• Surface acoustic wave driven ferromagnetic resonance in (Ga,Mn)(As,P) epilayers
• Electromechanical Magnetization Switching

Cited by in corpus (5)

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• Applications of Nanomagnets as Dynamical Systems
• Piezoelectric microresonators for sensitive spin detection
• GHz sample excitation at the ALBA-PEEM