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Information × Registration Number 0219U100551, 0116U002622 , R & D reports Title Magnetic, thermal and transport properties of periodically excited systems of ferromagnetic nanoparticles popup.stage_title Head Denysov Stаnislаv I., Registration Date 19-02-2019 Organization Sumy State University popup.description2  A theory of the response of ensembles of ferromagnetic nanoparticles to external periodic alternating magnetic fields is developed. The theory includes a generalized approach of small perturbations of the n-th order, applied in the deterministic case and nanoparticles fixed in a solid matrix; taking into account the finiteness of anisotropy of particles and the relationship of mechanical motion and magnetic dynamics for the deterministic case; description of the influence of thermal fluctuations on the response of the nanoparticles from the frozen magnetic moment; and, finally, the developed methodology for the numerical description of the influence of fluctuations and dipole interaction, based on the concept of the effective Langevin equation. As part of the latter, a detailed analysis of the impact of interaction on the ensemble's response was carried out using the Barnes-Hut algorithm and CUDA technology. A fundamentally new mechanism for the drift motion of ferromagnetic nanoparticles in a viscous fluid, which arises as a result of Magnus force, has been studied theoretically and numerically. Product Description popup.authors popup.nrat_date 2020-04-02 Close