SKM 2023 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 42: Poster: Active Matter, Soft Matter, Fluids

DY 42.16: Poster

Donnerstag, 30. März 2023, 13:00–16:00, P1

Static and dynamical magnetic properties ferrofluid with ellipsoid-like nanoparticles — •Vladimir Zverev, Alla Dobroserdova, Ekaterina Ekaterina, Elena Pyanzina, and Alexey Ivanov — Ekaterinburg, Russia

A system of magnetic ellipsoids with a point dipole at the particle center is considered. We take into account different shape's anisotropy and different positions of the magnetic moment inside the particle (parallel and perpendicular to the main axis of the ellipsoid). In order to study this system, molecular dynamics simulations are used. The ratio of the main semi-axis to the additional one was used as a measure of the particle anisotropy. In particular, we have studied the system in which the particles have magnetic moments, but there is no dipole-dipole interaction between them. As a result, the initial magnetic susceptibility (magnetic characteristic) and the radial distribution function (structural characteristic) were calculated. For the initial susceptibility, the data obtained in computer simulations differ from the Langevin magnetization (theoretical ideal case) within the statistical error. The data for the Radial Distribution Function (RDF) also match within the calculation error. The next stage of research was to take into account dipole-dipole interparticle interactions and also will be presented.

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