magnum.fe: A micromagnetic finite-element simulation code based on FEniCS

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:345

Article

Abert, Claas^1,2,3  Exl, Lukas⁴  Bruckner, Florian⁵  Drews, Andre^2,3 

[1] Univ Hamburg, Fachbereich Math, D-20146 Hamburg, Germany

[2] Univ Hamburg, Inst Angew Phys, D-20355 Hamburg, Germany

[3] Univ Hamburg, Zentrum Mikrostrukturforsch, D-20355 Hamburg, Germany

[4] Univ Appl Sci, Dept Technol, A-3100 St Polten, Austria

[5] Vienna Univ Technol, Inst Solid State Phys, A-1040 Vienna, Austria

关键词: Micromagnetics;    Finite-element method;    Landau-Lifshitz-Gilbert equation;   

DOI  :  10.1016/j.jmmm.2013.05.051

来源: Elsevier

【 摘 要 】

We have developed a finite-element micromagnetic simulation code based on the FEniCS package called magnum.fe. Here we describe the numerical methods that are applied as well as their implementation with FEniCS. We apply a transformation method for the solution of the demagnetization-field problem. A semi-implicit weak formulation is used for the integration of the Landau-Lifshitz-Gilbert equation. Numerical experiments show the validity of simulation results. magnum.fe is open source and well documented. The broad feature range of the FEniCS package makes magnum.fe a good choice for the implementation of novel micromagnetic finite-element algorithms. (c) 2013 Elsevier B.V. All rights reserved.

【 授权许可】

Free