6533b829fe1ef96bd128a1b4

RESEARCH PRODUCT

Stability analysis of a paramagnetic spheroid in a precessing field

Kaspars ĒRglisJanis CimursArtis Brasovs

subject

010302 applied physicsPhysicsField (physics)Dynamics (mechanics)02 engineering and technology021001 nanoscience & nanotechnologyCondensed Matter PhysicsBifurcation diagram01 natural sciencesStability (probability)Electronic Optical and Magnetic MaterialsComputational physicsMagnetic fieldParamagnetismOrientation (geometry)0103 physical sciencesParticle0210 nano-technology

description

Abstract The stability of a paramagnetic prolate or oblate spheroidal particle in a precessing magnetic field is studied. The bifurcation diagram is calculated analytically as a function of the magnetic field frequency and the precession angle. The orientation of the particle in the synchronous regime is calculated. The rotational dynamics and the mean rotational frequency in the asynchronous regime are also obtained. The theoretical model we describe enables the analytic calculation of the dynamics of the particle in the limiting case when the motion is periodic. The theoretical models were also compared with experimental results of rod like particle dynamics in a precessing magnetic field. The experimental results are in good agreement with the proposed theory.

yearjournalcountryeditionlanguage
2019-12-01Journal of Magnetism and Magnetic Materials
https://doi.org/10.1016/j.jmmm.2019.165630