Dresden 2009 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 14: Poster Ib: Magnetic Materials (1-14); Micro Magnetism/Computational Mag. (15-17); Surface Magnetism (18-22); Spin Structures/Phase Transitions (23-25)

MA 14.15: Poster

Dienstag, 24. März 2009, 10:15–13:00, P1B

TetraMag - A general-purpose finite-element micromagnetic simulation package — •Riccardo Hertel and Attila Kakay — Institut für Festkörperforschung, Elektronische Eigenschaften, Forschungszentrum Jülich GmbH

In the past years, the investigation of micromagnetic structures and dynamic magnetization processes on the nanoscale has greatly benefited from the availability of various free and commercial micromagnetic simulation packages. These programs have allowed a very large number of scientific groups to perform studies on countless systems, thereby obtaining a broad knowledge on this topic. Almost all of these publicly available codes have similar structures and are based on finite-difference formulations. Finite-element algorithms, on the contrary, are rather rare. Despite a number of advantageous features, micromagnetic studies with finite element codes are quite seldom, partly because such codes are often considered to be too complicated to develop and to use. The main plus of finite element algorithms is their geometric flexibility, which allows the modeling of three-dimensional objects of arbitrary shape with smooth boundaries. Our finite-element code TetraMag has several attractive features, such as easy implementation and usage, full parallelization, and the possibility of considering electric currents, surface anisotropies and the magnetostatic interaction of spatially separated nanomagnets. In this poster the structure of the program, the basics of the numerical formulation and the main features of the simulation package will presented. The release of the first public-domain version of TetraMag is planned for the first quarter of 2009