EFFECT OF PH AND CURRENT-DENSITY ON THE MAGNETIC-PROPERTIES OF ELECTRODEPOSITED CO-NI-P ALLOYS

The effect of the current density at low pH on the magnetic properties of electrodeposited Co-Ni-P alloys was investigated and correlated to their microstructure and particularly on their texture, The combinati on of low pH and low current densities led to a decrease in the coerci vity and to a strong narrowing of the hysteresis loop with respect to the usual performances of such deposits. This behavior was related to a modification of the microstructure and mainly to a partial amorphisa tion due to an increase in the phosphorus content.