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MM: Fachverband Metall- und Materialphysik
MM 55: Computational Materials Modelling - Magnetic Materials
MM 55.1: Vortrag
Donnerstag, 19. März 2020, 11:45–12:00, IFW B
A Phase Field Crystal Model for Magneto-Structural Interaction — •Rainer Backofen1 and Axel Voigt1,2 — 1Institute of Scientific Computing, Technische Universität Dresden, 01062 Dresden, Germany — 2Dresden Center for Computational Materials Science (DCMS), 01062 Dresden, Germany
Phase field crystal (PFC) modeling is based on a free energy for a smoothed particle density. The energy is minimized by a smoothed particle density, that has the basic symmetry of the crystal. Thus, defects, elasticity and plasticity is natural included.
In order to include magneto-structural interaction, local magnetization is coupled with a structural PFC model [1,2]. We will discuss the coupling and show how to control the magnetic properties of the model. This extended PFC model is used to study the impact of external magnetic fields on grain boundary movement and on coarsening in thin films [2].
[1] N.Faghihi et al. PRE 88, 032407 (2013).
[2] R. Backofen et al. PRL 122, 126103 (2019).