Thermophysical properties of Dy6UO12

Dysprosium uranate (Dy6UO12) was prepared by citrate gel combustion and characterized by X-ray diffraction (XRD). A single phase with a rhombohedral structure was observed image. The room temperature values of the lattice parameters “a” and “c” were found to be 9.9747 and 9.4370 Å, respectively. Heat capacity and enthalpy increment measurements were carried out by using a differential scanning calorimeter (DSC) and inverse drop calorimetry in the temperature range 298–800 K and 600–1700 K respectively. The thermal expansion characteristics were measured by using High Temperature XRD (HTXRD) in the temperature range 298–1973 K. The heat capacity data of Dy6UO12 is being reported for the first time and its value at 298 K is 462 J K−1 mol−1. The coefficient of lattice thermal expansion in the temperature range 298–1973 K along “a” and “c” axes are 13.28 × 10−6 and 9.35 × 10−6 K−1 respectively. These data are being reported for the first time as well.