Regensburg 2019 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 16: Methods in Computational Materials Modelling (methodological aspects, numerics)

MM 16.9: Vortrag

Dienstag, 2. April 2019, 12:30–12:45, H45

Modelling of Magnetic Driving Force in Grain Boundary Migration: Using Multi-Phase Field Method — •Liu Huo, Raphael Schiedung, and Ingo Steinbach — Interdisciplinary Centre for Advanced Materials Simulation

We provide a method which combines the dynamical solution of the magnetic moments and multi-phase field method. In our work we solve the motion of magnetic moments using either Time-Dependent Ginzburg Landau equation or Landau-Lifshitz-Gilbert equation. Meanwhile, by taking advantage of the multi-phase field method, we can solve the magnetic driving force by simply calculate the functional derivative with respect to the phase field for each terms of magnetic free energy so that we are able to solve the magnetic driven grain boundary migration simultaneously. With this method it is possible to simulate some magnetic dependent problems such as the orientation selection in external magnetic field during annealing and the magnetostriction. Our code is implemented in Openphase (www.openphase.de).