Mean first-passage times for an ac-driven magnetic moment of a nanoparticle

Abstract

The two-dimensional backward Fokker-Planck equation is used to calculate the mean first-passage times (MFPTs) of the magnetic moment of a nanoparticle driven by a rotating magnetic field. It is shown that a magnetic field that is rapidly rotating in the plane {\it perpendicular} to the easy axis of the nanoparticle governs the MFPTs just in the same way as a static magnetic field that is applied {\it along} the easy axis. Within this framework, the features of the magnetic relaxation and net magnetization of systems composed of ferromagnetic nanoparticles arising from the action of the rotating field are revealed.

7 pages, 1 figure

References in corpus (2)

• Switching Time Statistics for Driven Neuron Models: Analytic Expressions versus Numerics
• Escape rates in periodically driven Markov processes

Cited by in corpus (5)

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• Resonant suppression of thermal stability of the nanoparticle magnetization by a rotating magnetic field
• Temperature effects on drift of suspended single-domain particles induced by the Magnus force
• Dissipation-induced rotation of suspended ferromagnetic nanoparticles
• Noise-induced effects in magnetization reversal and chirality control of circular array of single-domained nanomagnets