Magnetic relaxations in metallic films single and multilayer structures

Summary form only given. The intrinsic magnetic relaxations in metallic films will be reviewed. The intrinsic relaxation in magnetic metals is different from that in magnetic insulators. The intrinsic damping mechanism in metals is caused by incoherent scattering of itinerant electron-hole pair excitations by phonons and magnons. The electronhole pair excitations are either accompanied by a spin flip or the spin remain unchanged. It will be 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.