Crystal structure and X-ray diffraction pattern of CuSnTi3 intermetallic phase

A new ternary compounds of Cu, Sn, and Ti, CuSnTi3, was found in this study, by isothermally treating Cu-23 at.%Ti-17 at.%Sn alloy at 900 °C for 10 h. This new ternary intermetallic compound has a hexagonal structure with a=0.4636 nm and c=0.5229 nm. Its crystal is of the same structure as that of Ni3Sn2, both of which have a space group of P63/mmc (hP6, No.194). In such a crystal structure, Cu and Sn are both arranged in the lattice positions of 2c (x=1/3, y=2/3, z=1/4, occ.=0.5), and Ti is arranged in 2a (x=0, y=0, z=0, occ.=1) and 2d (x=1/3, y=2/3, z=3/4, occ.=0.5).