Power Loss for a Periodically Driven Ferromagnetic Nanoparticle in a Viscous Fluid: the Finite Anisotropy Aspects

Abstract

The joint magnetic and mechanical motion of a ferromagnetic nanoparticle in a viscous fluid is considered within the dynamical approach. The equation based on the total momentum conservation law is used for the description of the mechanical rotation, while the modified Landau-Lifshitz-Gilbert equation is utilized for the description of the internal magnetic dynamics. The exact expressions for the particles trajectories and the power loss are obtained in the linear approximation. The comparison with the results of other widespread approaches, such as the model of fixed particle and the model of frozen magnetic moment, is performed. It is established that in the small oscillations mode the damping precession of the nanopartile magnetic moment is the main channel of energy dissipation, but the motion of the nanoparticle easy axis can significantly influence the value of the resulting power loss.

References in corpus (7)

• Dynamics of magnetic single domain particles embedded in a viscous liquid
• Magnetomechanical coupling and ferromagnetic resonance in magnetic nanoparticles
• Energy dissipation in single-domain ferromagnetic nanoparticles: Dynamical approach
• Magnetic nanoparticle traveling in external magnetic field
• Magnetic particle hyperthermia: Power losses under circularly polarized field in anisotropic nanoparticles
• Rotational properties of ferromagnetic nanoparticles driven by a precessing magnetic field in a viscous fluid
• Improved efficiency of heat generation in nonlinear dynamics of magnetic nanoparticles

Cited by in corpus (11)

• Energy dissipation of rigid dipoles in a viscous fluid under the action of a time-periodic field: the influence of thermal bath and dipole interaction
• Uniform and Nonuniform Precession of a Nanoparticle with Finite Anisotropy in a Liquid: Opportunities and Limitations for Magnetic Fluid Hyperthermia
• Temperature effects on drift of suspended single-domain particles induced by the Magnus force
• Efficiency of magnetic hyperthermia in the presence of rotating and static fields
• Dissipation-induced rotation of suspended ferromagnetic nanoparticles
• Stability of a Magnetically Levitated Nanomagnet in Vacuum: Effects of Gas and Magnetization Damping
• Theory of superlocalized magnetic nanoparticle hyperthermia: rotating versus oscillating fields
• Directed transport of suspended ferromagnetic nanoparticles under both gradient and uniform magnetic fields
• Dynamics and Energy Dissipation of a Rigid Dipole Driven by the RF-field in a Viscous Fluid: Deterministic Approach
• Polarised superlocalization in magnetic nanoparticle hyperthermia
• Dynamics of Suspended Nanoparticles in a Time-varying Gradient Magnetic Field: Analytical Results