Results 151 to 160 of about 10,377 (181)
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Adaptive Mesh Refinement for Micromagnetics Simulations
IEEE Transactions on Magnetics, 2006We present a methodology for efficient micromagnetics simulation. The method combines an unconditionally stable, finite differences scheme with an adaptive mesh refinement technique. It enhances accuracy by covering locally special regions of the domain with a sequence of nested, progressively finer rectangular grid patches that dynamically follow ...
C.J. Garcia-Cervera, A.M. Roma
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Discretization-Induced Stiffness in Micromagnetic Simulations
IEEE Transactions on Magnetics, 2014In the numerical integration of the Landau-Lifshitz-Gilbert (LLG) equation, stiffness (stability restrictions on the time step size for explicit methods) is known to be a problem in some cases. We examine the relationship between stiffness and spatial discretization size for the LLG with exchange and magnetostatic effective fields.
Shepherd, DP +3 more
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Micromagnetic simulation method with N1.5 scaling
Journal of Applied Physics, 1999A thin permalloy film with dimensions of 1 μm×2 μm×20 nm was simulated with a new three-dimensional method. The method is designed in such a way that the computing time scales roughly as N1.5 in the number N of discretization elements used to describe the system.
Filipe Ribeiro +2 more
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Micromagnetic simulations of antiferromagnetically coupled media
Journal of Applied Physics, 2002Antiferromagnetically coupled media were simulated using a micromagnetic model. Magnetic parameters, initially determined by fitting hysteresis loops to experimental media, were varied to determine their effect upon recording performance. The signal-to-noise ratio can be enhanced by tailoring the magnetic properties of the bias layer to an optimum Ms ...
S. J. Greaves +3 more
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High-performance micromagnetic simulations using OpenCL
Proceedings of the International Workshop on OpenCL, 2020We study the possibility to achieve optimal performance in micromagnetic simulation using GPGPU OpenCL calculations. We take into account several possibilities to accelerate using GPU-specific optimizations and reuse of external data arrays, and achieve up to 70% of theoretical maximum.
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Micromagnetics simulation of high energy density permanent magnets
IEEE Transactions on Magnetics, 2000A finite element approach is used to calculate the influence of different grain boundary phases on the reversal process of sintered Nd-Fe-B magnets. To calculate equilibrium states of the magnetic polarization the total Gibbs' free energy is minimized with a quasi-Newton conjugate gradient method.
D. Suss, T. Schrefl, J. Fidler
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Irregular grain structure in micromagnetic simulation
Journal of Applied Physics, 1996A randomized microstructure based on the Voronoi diagram is proposed for micromagnetic models. Simulations illustrate variability of extrinsic magnetic properties with microstructure, medium noise dependence on medium properties, and jitter dependence on trackwidth.
D. G. Porter +5 more
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Microscopic Simulations of Electrochemical Double-Layer Capacitors
Chemical Reviews, 2022Guillaume Jeanmairet +2 more
exaly
Macromagnetic Simulations by Micromagnetic Superposition
2020Özelt, Harald +4 more
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