The Influence of Composition on Morphology, Structure and Magnetic Properties of Ni-Co Films on Aluminum prepared by Electroplating Method

In this paper, Ni-Co alloy films with different composition were obtained by means of electroplating method. The morphology, structure and magnetic properties of Ni-Co alloy films with different Cobalt content are evaluated. The effect of the crystal orientation on the morphology of Ni-Co deposits with different compositon was discussed. The results showed that Ni-Co alloy films with Cobalt content decrease is composed of pyramidal, spindly, mixed pyramidal and spindly, and cellular particles respectively. To the deposits with similar composition, change of morphology is related to the preferential orientation. With the increase of the Nickel content, the saturation magnetization (Ms) value of the Ni-Co alloy films increases and then decreases sharply. The coercivety (Hc) value of the Ni-Co alloy films decreases with the Nickel content increase.