Influence of electrodeposition parameters on the magnetic and magneto-impedance properties of CoP/Cu wires

A systematic study of the influences of P content and CoP layer thickness on the magnetic properties and giant magneto-impedance (GMI) effect in electrodeposited CoP/Cu composite wires has been conducted. The results obtained show that there is a correlation between the structure, soft magnetic properties, and GMI effect in the wires. Among the compositions investigated, the optimized magnetic properties (i.e. the lowest coercivity) and the largest GMI ratio are achieved in Co85P15/Cu wires derived from an electrolyte containing H3PO3 concentration of 30 g/l with a plating duration of 3 min and a current density of 750 mA/cm2.