Magnetic Properties of Fe-Pt Films Electrodeposited by Diffusion Control

Fe-Pt films were produced by a simple method of electrodeposition under diffusion control, using a novel bath system containing small amounts of Fe 2+ and PtCl6 2. The films were annealed and, their structure and magnetic properties were studied. The sample started to show some ordering at a temperature less than 550 °C, which is lower than the previously reported ordering temperature. A coercivity of 3.2 kOe, comparable to previous data, and a squareness of 0.7 were obtained after the film was vacuum-annealed at 550°C for 15 min. The films displayed a longitudinal magnetic anisotropy. The obtained results promise this method to be a new choice for electrodeposition of Fe-Pt films.