Anisotropic Gilbert damping in epitaxial Fe films on InAs (001)

Abstract In this paper, we present frequency dependent ferromagnetic resonance (FMR) measurements on Fe films grown on InAs(0 0 1). The Gilbert damping parameter α was determined from the observed linear dependence of the FMR line width on the microwave frequency. α is reduced by 35% along the intermediate magnetic axis as compared to the hard and easy axes. This effect is attributed to the structural growth of Fe on InAs.