1,721,113 research outputs found
Element-Free Galerkin modeling of electromagnetic phenomena in ferromagnetic deformable bodies
No full textSpatial reconstruction of exchange field interactions with a finite difference scheme based on unstructured meshes
No full textA micromagnetic solver for large-scale patterned media based on non-structured meshing
No full textThe paper presents amicromagnetic solver, where the long-range contributions to the magnetostatic field are computed by a multipole expansion technique and the spatial distribution of the exchange field is reconstructed via a finite difference scheme able to handle non-structured meshes. In this way, large samples having complex geometries can be simulated. The numerical accuracy, the computational efficiency and the flexibility of the proposed solver are investigated by comparison to standard approaches
Critical aspects in micromagnetic computation of hysteresis loops of nanometer particles
No full textComparison of multiscale models for eddy current computation in granular magnetic materials
No full textA coupled multipole expansion - finite element approach for dynamic micromagnetic modeling
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Parallelized micromagnetic solver for the efficient simulation of large patterned magnetic nanostructures
No full textA 2.5D micromagnetic solver for randomly distributed magnetic thin objects
Full text linkThis paper presents a GPU-parallelized 2.5D micromagnetic solver for the efficient calculation of the magnetization configuration and hysteresis loop of 3D random distributions of magnetic thin-film objects, strongly interacting in the space. To well-reproduce complex shapes, the exchange field is calculated with a finite difference approach able to handle non-structured meshes. To enable the treatment of many objects, the magnetostatic field is locally separated into two contributions: an internal and an external one. The first term includes the magnetostatic interactions internal to each object and is obtained by numerically solving the Green’s integral equation. The second term describes the inter-object magnetostatic interactions and it is determined by approximating each object as a collection of magnetic dipoles, associated with mesh elements. The accuracy and computational efficiency of the solver are analysed by comparison to a standard 3D-FFT code and to a reference code, where all the magnetostatic field terms are evaluated by numerically solving the Green’s integral equation
Micromagnetic modelling of the anisotropy properties of permalloy antidot arrays with hexagonal symmetry
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