Details

Autor(en) / Beteiligte

• Shahu, Chiranjeev K.
• Dwivedi, Sharad
• Dubey, Shruti

Titel

Dynamics of curved domain walls in hard ferromagnets with nonlinear dissipative and inertial effects

Ist Teil von

• Physica. D, 2023-06, Vol.448, p.133737, Article 133737

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• This article investigates the field-driven motion of curved domain walls in ferromagnetic nanostructures under the framework of modified Landau–Lifshitz–Gilbert equation with inertial effects. The considered governing equation involves the torques arising from nonlinear dissipative (viscous and dry friction) and inertial effects. We study the most relevant dynamical features in the steady dynamical regime for the considered model by employing the reductive perturbation technique. Finally, we illustrate the results numerically for the various domain wall surfaces (plane, cylinder, and sphere) and discuss their physical significance. The results obtained here agree with the recent theoretical and experimental observations. •Dynamics of curved domain walls in ferromagnetic nanostructures is investigated.•An analytical expression of the zeroth-order magnetization vector has been derived.•A partial differential equation of domain wall velocity has been obtained.•Breakdown value of the velocity does not depend on nonlinear viscous dissipation.•Inertial and nonlinear damping effects decrease the velocity as time evolves.