Electroless Deposition of Thin-Film CoB alloys: The Influence of Some Bath Parameters on its Magnetic Behavior

Abstract

The influence of citrate and glycine at different concentrations on the morphology and magnetic properties of thin film CoB alloys is studied. With both additives, coercivity (Hc) is inversely proportional to the complexant concentration. In deposits obtained from glycine containing baths higher magnetization saturation (Ms) values were obtained (1.3 T). Possibly the higher Ms in deposits grown from glycine baths is due to the low boron content (less than 1%). In deposits obtained in citrate containing baths, the boron content increased until a maximum of c.a. 15 % as the citrate concentration was increased. There are evidences that not only boron but the additive influences microstructure and therefore the magnetic properties of such films.