Electro-ferrite plating of magnetite at 24-80/spl deg/C

At room temperature (24/spl deg/C) magnetite (Fe/sub 3/O/sub 4/) films are successfully grown from an aqueous solution utilizing anodic oxidation of Fe/sup 2+/ to Fe/sup 3+/. Applying DC anodic voltage of 0.4 V, single phase Fe/sub 3/O/sub 4/ films are grown at various temperatures from 24 to 80/spl deg/C on NESA glass substrates from mixed solutions of FeCl/sub 2/+NH/sub 3/. Fixing the concentration of FeCl/sub 2/, the concentrations at which we can obtain the highest film deposition rate are determined at 24/spl deg/C and 80/spl deg/C. The films have a saturation magnetization of magnitude equal to that of bulk sample.