The Characterisation of Electrodeposited NiCoFe Alloy Films

A series of NiCoFe alloy films were deposited on polycrystalline Titanium substrate using electrodeposition technique to study their structural and magnetic properties. The electrolyte contained 0.5 M NiSO4, 0.1M CoSO4, 0.01M FeSO4 and 0.3M H3BO3. The films were grown at different deposition potential . The electrolyte pH was 3.2. X-ray diffraction results showed that NiCoFe alloy films displayed face centred cubic structure. Magnetoresistance (MR) measurements of the films were carried out using Van der Pauw (VDP) method at room temperature and magnetic field was applied up to ±10 kOe. The MR measurements indicated that all films exhibited anisotropic magnetoresistance. The vibrating sample magnetometer (VSM) was used to study the magnetic properties. The VSM measurements showed that the magnetic properties are sensitive to the deposition potential and the easy axis is in the film plane