The strong influence of small amounts of palladium on the structure of liquid potassium-thallium

Neutron diffraction measurements on liquid KT1 alloys with 0, 1, and 5 at% Pd, respectively, show that the prepeak in the structure factor shifts from wave vector k = 8.0 to 7.2 nm(-1) with an increasing amount of Pd. This corresponds to a periodicity change from 0.96 to 1.07 nm in real space.(2) The structure of the liquid KT1 alloys is compared to the corresponding crystal structures, and some similarities are observed. Reverse Monte Carlo modelling indicates T1 clustering in the liquid alloy. Also in solid KT1 T1-clusters occur. The distance between the clusters increases with the addition of 5% Pd, More information is needed to discriminate between various possible structures of the T1 clusters in the liquid alloy and to determine the position of Pd in these clusters