DENDRITIC GROWTH OF ELECTRODEPOSITED CO-P AMORPHOUS-ALLOYS

A novel method, by which large amounts of Co88P12. amorphous alloy can be obtained by electrolysis, is described. The method is based on the dendritic growth of a sample which allows the sample to be easily sep arated from the copper substrate at room temperature. A homogeneous de posit can be obtained when an appropriate current density, J greater t han or similar to 4 X 10(4) A m-2, is chosen. Calorimetric measurement s show slight variations in samples with the same composition obtained with differing current densities. After milling, the material is magn etically soft, with high saturation magnetization (sigma(s) = 111.3 em u/g) and a negligible magnetic hysteresis.