Berlin 2018 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 32: Micromagnetism and computational magnetics

MA 32.1: Vortrag

Mittwoch, 14. März 2018, 15:00–15:15, H 0112

Micromagnetic studies of exchange-biased spherical half shells — •Rico Huhnstock, Meike Reginka, Andreea Tomiţa, Dennis Holzinger, and Arno Ehresmann — Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Str. 40, D-34132 Kassel

Magnetic Janus particles show a highly promising dynamical behavior in microfluidic experiments especially if the particles consist of a spherical metallic half shell that exhibits a spatially fixed and directed magnetization due to the exchange bias effect. Understanding the magnetic properties of these half shells becomes a difficult task since the underlying curved geometry heavily influences the configuration of the magnetization distribution in the considered system. Thus, in this work the Python based micromagnetic simulation package Nmag [1] was used in order to compute magnetic equilibrium states of the modeled half shells. The results of parameter studies concerning the influence of different energy and size related contributions will be presented and discussed.

[1] Fischbacher, T., Franchin, M., Bordignon, G., Fangohr, H. (2007), A Systematic Approach to Multiphysics Extensions of Finite-Element-Based Micromagnetic Simulations: Nmag. IEEE Transactions on Magnetics, 43: 2896-2898.