Study on preparation of NiFe films by galvanostatic electrodeposition

Abstract

NiFe alloy films were prepared by galvanostatic electrodeposition method on a copper substrate under various deposition temperature and current density. The structure and surface morphology of electrodeposited NiFe films were analysed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Vibrating sample magnetometer and electrochemical workstation was used to obtain the magnetic and corrosion behaviours of the NiFe thin film. The results showed that the NiFe particle size was ranging from 10 to 30 nm. The main phase of NiFe thin films was fcc (FeNi₃) structure. NiFe thin films prepared under the condition of temperature (60°C) and current density (167 A m⁻²) possessed low coercivity (0·18 kA m⁻¹) and high specific saturation magnetisation (253 Am² kg⁻¹).