Structural and magnetic properties of Fe71Pt29 thin films

Abstract We report on Fe 71 Pt 29 thin films which are prepared by co-evaporation of Fe and Pt onto quartz substrates at room temperature. Fe 71 Pt 29 films exhibit after annealing up to 870 K an ordered L1 2 -structure as obtained by X-ray diffraction (XRD), transmission electron microscopy (TEM) and high resolution electron microscopy (HREM). Moreover, magnetic measurements reveal that the annealed Fe 71 Pt 29 thin films have the same magnetic properties as ordered Fe 71 Pt 29 bulk alloys. Surprisingly, also the as-prepared Fe 71 Pt 29 films show the same magnetic behavior as the annealed Fe 71 Pt 29 films, which suggests that ‘already’ the as-prepared films are in the ordered state.