Numerical simulation of remagnetization processes in extended thin films and periodic nanodot arrays
The best approach to compute the long-range stray field by micromagnetic simulations of systems with periodic boundary conditions (PBCs) on regular grids is the fast Fourier transform (FFT)-based solution of the Poisson equation combined with the Ewald method to ensure a rapid convergence of the Fou...
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| Veröffentlicht in: | IEEE transactions on magnetics 2002-09, Vol.38 (5), p.2474-2476 |
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| container_title | IEEE transactions on magnetics |
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| creator | Berkov, D.V. Gorn, N.L. |
| description | The best approach to compute the long-range stray field by micromagnetic simulations of systems with periodic boundary conditions (PBCs) on regular grids is the fast Fourier transform (FFT)-based solution of the Poisson equation combined with the Ewald method to ensure a rapid convergence of the Fourier series. Here, we present the version of such an FFT-Ewald method suitable for grids of rectangular cells. Further, we have incorporated the evaluation of the near-field part of the Ewald sums into the FFT procedure used to evaluate the field of the Gaussian dipole lattice, so that no additional time is spent for the near-field computation. The method described can be used for simulation of any three- or two-dimensional systems with PBC. We present physical examples dealing with extended thin films and arrays of nanowires and nanodots. |
| doi_str_mv | 10.1109/TMAG.2002.803618 |
| format | Article |
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| source | IEEE Electronic Library (IEL) |
| subjects | Applied classical electromagnetism Boundary conditions Computational modeling Electromagnetism electron and ion optics Exact sciences and technology Fast Fourier transforms Fourier series Fundamental areas of phenomenology (including applications) Grid computing Lattices Magnetism Magnetostatics magnetic shielding, magnetic induction, boundary-value problems Micromagnetics Numerical simulation Physics Poisson equations Transistors |
| title | Numerical simulation of remagnetization processes in extended thin films and periodic nanodot arrays |
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