Effect of current density on electrodeposited cobalt ferrous tungsten phosphorus magnetic thin films

Abstract

The properties of Co-Fe-W-P magnetic thin films electrodeposited in the presence of sodium hypophosphite as a precursor with varying concentrations were studied with respect to thickness of the films. Films were electrodeposited in various current densities in order to get different thickness and uniform deposits. Vibrating sample magnetometer studies indicate the magnetic saturation (Ms), retentivity (Mr) and coercivity (Hc) of these films. Crystallite size and dislocation density of Co-Fe-W-P thin films were calculated by X-ray diffraction studies. Surface morphology analysis was carried out by using Scanning Electron Microscope. Percentages of elemental analysis of Co-Fe-W-P thin films were obtained by using energy dispersive X-ray analysis. Hardness and adhesion of the films were also studied. Difference in magnetic properties and structural characteristics are discussed.