Thermal Expansion Behaviour of Ce2Zr2O7 up too 898 K in Conjunction with Structural Analyses by Neutron Diffraction

The thermal expansion of cubic pyrochlore Ce2Zr2O7 has been measured from room temperature to 898 K on polycrystalline material in conjunction with structural analyses using neutron diffraction. This compound has a thermal expansion coefficient in line with the other comparable lanthanoide pyrochlore oxides. The coefficient can be expressed as ¿(T) = 8.418×10-6 + 0.9861×10-9×T. The structural refinements performed for each measured temperature showed a comparable linear evolution of the Ce-O / Zr-O distances (within 0.57%).JRC.E.3-Materials researc