Crystal structure parameters of Pd$_{3}$Lu$_{2}$ intermetallide

X-ray analysis was used to show that aging of Pd-44.5 at.% Lu and Pd-45.7 at.% Lu alloys at 500$^о$C resulted in the formation of the Pd$_3$Lu$_2$ intermetallide with a monoclinic lattice ($a=7.78$ Å, $b=8.90$ Å, $c=12.21$ Å, $\beta=117^о$). The crystallization of Pd$_3$Lu$_2$ is preceded by the formation of a metastable phase with a berthollide-type hexagonal lattice.