Lukas Exl

TL;DR: In this article, a steepest descent energy minimization scheme for micromagnetic magnetics is presented, which searches on a curve that lies on the sphere which keeps the magnitude of the magnetization vector constant.

TL;DR: The coercive field of permanent magnets decreases with increasing grain size as mentioned in this paper, which is explained by a size dependent demagnetizing factor, which ranges from 0.2 to 1.22 for a grain size of 8300nm.

TL;DR: A transformation method is applied for the solution of the demagnetization-field problem and a semi-implicit weak formulation is used for the integration of the Landau–Lifshitz–Gilbert equation.

TL;DR: In this article, the potential of rare-earth reduced and free permanent magnets is investigated using micromagnetic simulations, and the results show excellent hard magnetic properties can be achieved in grain boundary engineered NdFeB, rare earth magnets with a ThMn12 structure, Co-based nano-wires, and L10-FeNi provided that the magnet's microstructure is optimized.

TL;DR: It turns out that for cuboid structures the integral methods, which work on cuboid grids (fast Fourier transform methods and tensor-grid methods), outperform the finite-element method in terms of the ratio of computational effort to accuracy.