Abstract
Samples of Ni76P24 metallic glass alloy were prepared by the electroplating technique. Two types of surfactant material, namely triton-X 100 (non-ionic) and sodium loruyl sulphate (anionic) were used, each of which was added-at different concentrations-to the preparation bath. The x-ray diffractograms of the samples indicate that the addition of surfactants has changed the disorder in the system. The electrical resistivity, measured by the conventional four-probe technique in a temperature range from 300 K down to 18 K, is reduced. Also the temperature coefficient of resistivity is changed to a positive value instead of remaining nearly zero. Moreover, the thermal expansion coefficient decreases as the concentration of surfactant increases. The results of all the measurements indicate that the anionic surfactant has more influence on the enhancement of the crystalline behaviour of the system than the non-ionic one does.