Magnetic domain wall creep and depinning: a scalar field model approach
arXiv:1801.07324 · doi:10.1103/PhysRevE.97.062122
Abstract
Magnetic domain wall motion is at the heart of new magneto-electronic 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.
References in corpus (27)
- Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
- Interface-Induced Phenomena in Magnetism
- Creep and depinning in disordered media
- The 2014 Magnetism Roadmap
- Domain wall tilting in the presence of the Dzyaloshinskii-Moriya interaction in out-of-plane magnetized magnetic nanotracks
- Effect of interfacial intermixing on the Dzyaloshinskii-Moriya interaction in Pt/Co/Pt
- Universal pinning energy barrier for driven domain walls in thin ferromagnetic films
- Pinning dependent field driven domain wall dynamics and thermal scaling in an ultrathin Pt/Co/Pt magnetic film
- Creep dynamics of elastic manifolds via exact transition pathways
- Hysteresis loops of magnetic thin films with perpendicular anisotropy
- Numerical simulations of two dimensional magnetic domain patterns
- Depinning transition and thermal fluctuations in the random-field Ising model
- Non-steady relaxation and critical exponents at the depinning transition
- Universal Depinning Transition of Domain Walls in Ultrathin Ferromagnets
- Thermal rounding of the depinning transition
- Numerical Approaches on Driven Elastic Interfaces in Random Media
- Crossed ratchet effects for magnetic domain wall motion
- Universal domain wall dynamics under electric field in Ta/CoFeB/MgO devices with perpendicular anisotropy
- Dispersive Stiffness of Dzyaloshinskii Domain Walls
- Depinning of a domain wall in the 2d random-field Ising model
- Thermal rounding exponent of the depinning transition of an elastic string in a random medium
- Thermal rounding of the depinning transition in ultrathin Pt/Co/Pt films
- Short-time domain-wall dynamics in the random-field Ising model with a driving field
- Langevin simulations of a model for ultrathin magnetic films
- Crossed-ratchet effects and domain wall geometrical pinning
- Creep motion of a domain wall in the two-dimensional random-field Ising model with a driving field
- Depinning phase transition in two-dimensional clock model with quenched randomness
Cited by in corpus (15)
- Creep motion of elastic interfaces driven in a disordered landscape
- Barkhausen noise from precessional domain wall motion
- Transient magnetic domain wall AC dynamics by means of MOKE microscopy
- From bulk descriptions to emergent interfaces: connecting the Ginzburg-Landau and elastic line models
- Revealing nanoscale disorder in W/CoFeB/MgO ultra-thin films using domain wall motion
- Depinning exponents of thin film domain walls depend on disorder strength
- Tuning Ginzburg-Landau theory to quantitatively study thin ferromagnetic materials
- Manipulating the internal structure of Bloch walls
- Degradation of domains with sequential field application
- Long-range interactions in the avalanches of elastic interfaces
- Phase separation on surfaces in presence of matter exchange
- Curvature-driven AC-assisted creep dynamics of magnetic domain walls
- Depinning free of the elastic approximation
- Microscopic interplay of temperature and disorder of a one-dimensional elastic interface
- Field-dependent roughness of moving domain walls in a Pt/Co/Pt magnetic thin film