Scalable Parallel Micromagnetic Solvers for Magnetic Nanostructures
, a, Josef FidleraThomas Schrefla, Dieter Suessa, Rok Dittricha, Hermann Forstera, Vassilios Tsiantosa
aVienna University of Technology, Institute of Solid State Physics, Wiedner Hauptstrasse 8-10/138, A-1040 Vienna, Austria
Werner Scholz, , a, Josef FidleraThomas Schrefla, Dieter Suessa, Rok Dittricha, Hermann Forstera, Vassilios Tsiantosa
A parallel finite element micromagnetics package has been implemented, that is highly scalable, easily portable and combines different solvers for the micromagnetic equations. The implementation is based on the standard Galerkin discretization on tetrahedral meshes with linear basis functions. A static energy minimization, a dynamic time integration, and the nudged elastic band method have been implemented. The details of the implementation and some aspects of the optimization are discussed and timing and speedup results are given. Nucleation and magnetization reversal processes in permalloy nanodots are investigated with this micromagnetics package.
Author Keywords: micromagnetics, finite element method, scalable, parallel, nanostructures