High-pressure Raman study ofCeO2to 35 GPa and pressure-induced phase transformation from the fluorite structure

Bulk modulus of CeO2 and PrO2—An experimental and theoretical study

“…High-pressure Raman studies on CeO 2 in comparison with the isostructural actinide dioxide ThO 2 indicate a pressureinduced phase transition from the fluorite phase around 31 GPa in CeO 2 and around 30 GPa in ThO 2 [14,15]. The high-pressure spectra are consistent with the lower-symmetry ␣PbCl 2 -type structure.…”

New high-pressure phase and equation of state of Ce2Zr2O8

“…HP studies of cubic CeO 2 indicate that a structural transition to an orthorhombic PbCl 2 -type lattice occurs at 31 GPa. 50,51 The same transition is reported in nanocrystalline CeO 2 at 22.3 GPa. 34,35 A large volume collapse with an increase in coordination number in the metal ions is observed at this transition.…”

Solvothermal synthesis of monodisperse self-assembly CeO2 nanospheres and their enhanced blue-shifting in ultraviolet absorption

“…3(a). CeO 2 with cubic fluorite type of structure belongs to the O 5 h (Fm3m) space group [29]. The typical sample exhibits only one first order Raman peak (∼463 cm −1 ) in the spectrum, which can be assigned to F 2g symmetry as a symmetrical stretching mode of the Ce-8O vibrational units.…”