Mössbauer study of electrodeposited Fe/Fe-oxide multilayers

Iron has been deposited electrochemically by short current pulses in Na‐saccharin containing FeII‐chloride and sulphate solution electrolytes. Combined electrochemical techniques with initial pulse plating of iron nanolayer and its subsequent anodic oxidation under potential control have been used for production of Fe/Fe‐oxide multilayers. 57Fe CEM spectra of pulse plated iron revealed the presence of a minor doublet attributed mainly to γ‐FeOOH in addition to the dominant sextet of α‐iron. In the case of anodically oxidized pulse plated iron and of samples after repeated deposition of anodically oxidized pulse plated iron an additional minor doublet, assigned to ferrous chloride, also appears in the Mossbauer spectra. A significant change in the magnetic anisotropy of α‐iron was observed with the anodic oxidation. The thickness of the layers were estimated from the CEM spectrum data by a modified computer program of the Liljequist method. The coercive field and the power loss versus frequency data showed...