We electroplated Fe-Co films in a citric-acid-based plating bath with saccharin and sodium lauryl sulfate and evaluated the magnetic properties of the films. The Fe content in the film can be readily controlled by the change in the ratio of the Fe reagent and the Co one, and the Fe content could be obtained from 10 to 90 at.% in our experimental conditions. The change in the saturation magnetization over the Fe content of the film almost agreed with the expected change from the Slater-Pauling curve. The coercivity decreased with increasing the Fe content. From the structural analysis, we found that the grain size reduced with increasing the Fe content, and the grain refinement effect works effectively to reduce the coercivity.

中文翻译：

---

糖精和十二烷基硫酸钠在柠檬酸基镀液中制备的Fe-Co电镀膜

我们用糖精和十二烷基硫酸钠在柠檬酸基镀液中电镀了Fe-Co膜，并评估了膜的磁性。可以通过改变Fe试剂和Co 1的比例来容易地控制膜中的Fe含量，并且在我们的实验条件下，Fe含量可以从10至90at。％获得。薄膜中Fe含量的饱和磁化强度变化几乎与Slater-Pauling曲线的预期变化一致。矫顽力随Fe含量的增加而降低。通过结构分析，我们发现随着Fe含量的增加，晶粒尺寸减小，晶粒细化效果有效地降低了矫顽力。