Magnetic relaxation in metallic films: Single and multilayer structures

Magnetic relaxation in metallic films: Single and multilayer structures

The intrinsic magnetic relaxations in metallic films will be discussed. It will be shown that the intrinsic damping mechanism in metals is caused by incoherent scattering of itinerant electron-hole pair excitations by phonons and magnons. Berger @L. Berger, Phys. Rev. B 54, 9353 ~1996!# showed that the interaction between spin waves and itinerant electrons in multilayers can lead to interface G...

Tb/Co MULTILAYER FILMS AND THE RELAXATION OF THEIR INTERFACE

In Tb/Co multilayers, the saturation magnetization M, and the anisotropy constant K,, as a function of the modulation period are fitted by a mean-field model and a dipolar interaction model respectively. The Kerr rotation angles Bk relax at room temperature, which could be attributed to the existence of shear stress due to lattice mismatch at the interface.

Magnetic relaxation in Fe-(SiO2) granular films.

Plastic relaxation of metamorphic single layer and multilayer InGaAs/GaAs structures

The plastic relaxation of multilayer structures of strained InGaAs grown above critical thickness on GaAs is reported and compared with the relaxation of single layers and with theory. We show that a composite structure, taken as a whole, follows the same relaxation law as observed in single layers. However, departures of the strains of some component layers from theory show that misfit disloca...

Spatially modulated magnetic structures in thin films

The axial next–nearest neighbour Ising (ANNNI) model is studied for thin films of up to L = 10 layers, with a distinct phase diagram for each film thickness. The systematics of the ordered phases, as obtained from mean–field theory, Monte Carlo simulations, and low temperature expansions, is discussed. Results are compared to those for the ANNNI model in the limit L −→ ∞. PACS numbers: 68.35.Rh...