Stability for static walls in ferromagnetic nanowires

Stability for Static Walls in Ferromagnetic Nanowires

The goal of this article is to analyze the time asymptotic stability of one dimensional Bloch walls in ferromagnetic materials. The equation involved in modelling such materials is the Landau-Lifchitz system which is non-linear and parabolic. We demonstrate that the equilibrium states called Bloch walls are asymptotically stable modulo a rotation and a translation transverse to the wall. The li...

Dynamic Notch Pinning Fields for Domain Walls in Ferromagnetic Nanowires

Stability of 2 π domain walls in ferromagnetic

Gabriel D. Chaves-O'Flynn, Daniel Bedau, Eric Vanden-Eijnden, A. D. Kent D. L. Stein Department of Physics, New York University, 4Washington Place, New York, New York 10003, USA and Courant Institute of Mathematical Sciences, New York University, New York, New York, 10012 The stability of 2π domain walls in ferromagnetic nanorings is investigated via the calculation of the energy barrier that s...

Ferromagnetic GaN--Cr Nanowires.

Using first-principles theory, we predict ferromagnetism in Cr-doped GaN nanowires irrespective of the sites that the Cr atoms occupy. This is in contrast to Mn-doped GaN nanowires in which the magnetic coupling between the Mn atoms is sensitive to the Mn--Mn and Mn--N distances, although the ground state of Mn-doped GaN nanowires is ferromagnetic. Each Cr atom carries a magnetic moment of abou...

Ferromagnetic ZnO Nanowires for Spintronic Applications