info:eu-repo/semantics/article
Magnetic domain wall creep and depinning: A scalar field model approach
Fecha
2018-06-11Registro en:
Caballero, Nirvana Belén; Ferrero, Ezequiel E.; Kolton, Alejandro Benedykt; Curiale, Carlos Javier; Jeudy, Vincent; et al.; Magnetic domain wall creep and depinning: A scalar field model approach; American Physical Society; Physical Review E; 97; 6; 11-6-2018; 062122-1/9
2470-0045
2470-0053
CONICET Digital
CONICET
Autor
Caballero, Nirvana Belén
Ferrero, Ezequiel E.
Kolton, Alejandro Benedykt
Curiale, Carlos Javier
Jeudy, Vincent
Bustingorry, Sebastián
Resumen
Magnetic domain wall motion is at the heart of new magnetoelectronic technologies and hence the need for a deeper understanding of domain wall dynamics in magnetic systems. In this context, numerical simulations using simple models can capture the main ingredients responsible for the complex observed domain wall behavior. We present a scalar field model for the magnetization dynamics of quasi-two-dimensional systems with a perpendicular easy axis of magnetization which allows a direct comparison with typical experimental protocols, used in polar magneto-optical Kerr effect microscopy experiments. We show that the thermally activated creep and depinning regimes of domain wall motion can be reached and the effect of different quenched disorder implementations can be assessed with the model. In particular, we show that the depinning field increases with the mean grain size of a Voronoi tessellation model for the disorder.