Asymptotic analysis for two joined thin slanting ferromagnetic films

Junction of ferromagnetic thin films

In this paper, starting from the classical 3D micromagnetic energy, we determine, via an asymptotic analysis, the free energy of two joined ferromagnetic thin films. We distinguish different regimes depending on the limit of the ratio between the small thicknesses of the two films.

3d-2d Asymptotic Analysis for Inhomogeneous Thin Films

A dimension reduction analysis is undertaken using ?-convergence techniques within a relaxation theory for 3D nonlinear elastic thin domains of the form where ! is a bounded domain of R 2 and f" is an "-dependent proole. An abstract representation of the eeective 2D energy is obtained, and speciic characterizations are found for nonhomogeneous plate models, periodic pro-les, and within the cont...

Stripe glasses in ferromagnetic thin films

Ferromagnetic liquid thin films under applied field

Theoretical calculations, computer simulations, and experiments indicate the possible existence of a ferromagnetic liquid state, although definitive experimental evidence is lacking. Should such a state exist, demagnetization effects would force a nontrivial magnetization texture. Since liquid droplets are deformable, the droplet shape is coupled with the magnetization texture. In a thin-film g...

Enhanced gilbert damping in thin ferromagnetic films.

The precession of the magnetization of a ferromagnet is shown to transfer spins into adjacent normal metal layers. This "pumping" of spins slows down the precession corresponding to an enhanced Gilbert damping constant in the Landau-Lifshitz equation. The damping is expressed in terms of the scattering matrix of the ferromagnetic layer, which is accessible to model and first-principles calculat...