Results 81 to 90 of about 1,352 (179)

On the relaxation time of interacting superparamagnetic nanoparticles and implications for magnetic fluid hyperthermia

open access: yesBeilstein Journal of Nanotechnology, 2019
A critical discussion on the presently available models for the relaxation time of magnetic nanoparticles approaching the superparamagnetic regime in the presence of interparticle dipolar interactions is considered.
Andrei Kuncser   +2 more
doaj   +1 more source

Discretization anisotropy in micromagnetic simulations

open access: yes
Finite difference based micromagnetic simulations are a powerful tool for the computational investigation of magnetic structures. In this paper, we demonstrate how the discretization of continuous micromagnetic equations introduces a numerical 'discretization anisotropy'.
Holt, Samuel J. R.   +4 more
openaire   +2 more sources

Numerical simulation projects in micromagnetics with Jupyter [PDF]

open access: yesAmerican Journal of Physics
We report a case study where an existing materials science course was modified to include numerical simulation projects on the micromagnetic behavior of materials. The Ubermag micromagnetic simulation software package is used in order to solve problems computationally.
Lonsky, M   +8 more
openaire   +4 more sources

Convergence of highly parallel stray field calculation using the fast multipole method on irregular meshes

open access: yesAIP Advances, 2018
Fast stray field calculation is commonly considered of great importance for micromagnetic simulations, since it is the most time consuming part of the simulation.
P. Palmesi   +3 more
doaj   +1 more source

Exchange coupled composite media for heat assisted magnetic recording

open access: yesAIP Advances, 2017
Micromagnetic simulation is used to calculate the temperature derivative of the switching field dHsw/dT for a composite media with a superparamagnetic writing layer.
Zengyuan Liu, R. H. Victora
doaj   +1 more source

Large-scale micromagnetic simulation of Nd-Fe-B sintered magnets with Dy-rich shell structures

open access: yesAIP Advances, 2016
Large-scale micromagnetic simulations have been performed using the energy minimization method on a model with structural features similar to those of Dy grain boundary diffusion (GBD)-processed sintered magnets. Coercivity increases as a linear function
T. Oikawa, H. Yokota, T. Ohkubo, K. Hono
doaj   +1 more source

Micromagnetic simulation of electric-field-assisted magnetization switching in perpendicular magnetic tunnel junction

open access: yesAIP Advances, 2017
The feasibility of a voltage assisted unipolar switching in perpendicular magnetic tunnel junction (MTJ) has been studied using a micromagnetic simulation. Assuming a linear modulation of anisotropy field with voltage, both parallel (P) to anti-parallel (
Chikako Yoshida   +6 more
doaj   +1 more source

Multiscale multimodel simulation of micromagnetic singularities

open access: yes
Simulation multi-échelles et multi-modèles de singularités micromagnétiques D'un point de vu fondamental, la structure micromagnétique d'un point de Bloch est prédite depuis plus de 50 ans, mais représente cependant une singularité topologique dans le cadre de la théorie du micromagnétisme.
openaire   +2 more sources

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