Drift of suspended ferromagnetic particles due to the Magnus effect

Abstract

A minimal system of equations is introduced and applied to study the drift motion of ferromagnetic particles suspended in a viscous fluid and subjected to a time-periodic driving force and a nonuniformly rotating magnetic field. It is demonstrated that the synchronized translational and rotational oscillations of these particles are accompanied by their drift in a preferred direction, which occurs under the action of the Magnus force. We calculate both analytically and numerically the drift velocity of particles characterized by single-domain cores and nonmagnetic shells and show that there are two types of drift, unidirectional and bidirectional, which can be realized in suspensions composed of particles with different core-shell ratios. The possibility of using the effect of bidirectional drift for the separation of core-shell particles in suspensions is also discussed.

arXiv comment10 pages, 3 figures

References in corpus (5)

• Dynamics of magnetic single domain particles embedded in a viscous liquid
• Energy dissipation in single-domain ferromagnetic nanoparticles: Dynamical approach
• Rotational properties of ferromagnetic nanoparticles driven by a precessing magnetic field in a viscous fluid
• Induced magnetization and power loss for a periodically driven system of ferromagnetic nanoparticles with randomly oriented easy axes
• Curveballs in protoplanetary disks - the effect of the Magnus force on planet formation

Cited by in corpus (5)

• Temperature effects on drift of suspended single-domain particles induced by the Magnus force
• Dissipation-induced rotation of suspended ferromagnetic nanoparticles
• Disordering, Clustering, and Laning Transitions in Particle Systems with Dispersion in the Magnus Term
• Exactly solvable model for drift of suspended ferromagnetic particles induced by the Magnus force
• Directed transport of suspended ferromagnetic nanoparticles under both gradient and uniform magnetic fields