Fe–Pt films prepared from plating baths containing glycine as a complexing agent

We have reported Fe–Pt films with hard magnetic properties electroplated from plating baths using citric acid as a complexing agent. The present study focuses on glycine as a new complexing agent instead of citric acid. We developed an electroplating process of Fe–Pt films using glycine-based plating baths and then investigated the effect of Cl ions on the coercivity. High coercivity could be obtained around the film’s composition of Fe50Pt50, and the obtained value (∼1000 kA/m) was almost the same as that in the previous study of the citric acid-based plating bath. The amount of glycine slightly affected the coercivity and the Fe content in the film, and under our experimental conditions, 20 g/l of glycine was effective in obtaining a high coercivity. From the investigations of the effect of Cl ions on coercivity, we confirmed that the coercivity reduction by the presence of the Cl ions does not depend on the complexing agent and concluded that complexing agents are not a factor in the decrease of coercivity by the presence of the Cl ions in the baths.