Magnetic relaxations in metallic films, single and multilayer structures

Summary from only given. The intrinsic magnetic relaxations in metallic films are reviewed. The intrinsic damping mechanism in metals is caused by incoherent scattering of itinerant electron-hole pair excitations by phonons and magnons. The electron-hole pair excitations are either accompanied by a spin flip or the spin remains unchanged. It is shown that the electron spin flip excitations can be caused by the exchange interaction between magnons and itinerant electrons (s-d exchange interaction), and they can lead to magnetic relaxation when the spin-orbit interaction is included which provides a spin flip relaxation of itinerant electron-hole pairs. The electron spin-conserving scattering is caused by the spin-orbit interaction which leads to a dynamic redistribution of electrons.